Fundamental Principles of the Metaphysic of Morals Flashcards
Immanuel Kant · Public domain edition · 90 cards · 24 chapters
Kant argues that moral obligation must rest on a priori principles grounded in pure reason rather than experience, and that a good will is the only thing good without qualification. The deck covers his division of philosophy, the necessity of a metaphysic of morals, and reason's relation to happiness.
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Chapter 1 · Question
How does Kant divide ancient Greek philosophy into three sciences?
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Chapter 1 · Answer
Kant states ancient Greek philosophy was divided into physics, ethics, and logic. He calls this division perfectly suitable to the nature of the thing, and says the only improvement possible is to add the principle on which it is based, so we may satisfy ourselves of its completeness and correctly determine its necessary subdivisions.
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Section 14 cards
How does Kant divide ancient Greek philosophy into three sciences?
Kant states ancient Greek philosophy was divided into physics, ethics, and logic. He calls this division perfectly suitable to the nature of the thing, and says the only improvement possible is to add the principle on which it is based, so we may satisfy ourselves of its completeness and correctly determine its necessary subdivisions.
Chapter 1
What distinguishes logic from natural and moral philosophy regarding empirical parts?
Kant argues logic cannot have any empirical part, since its universal and necessary laws of thought must not rest on experience, or it would not be a canon valid for all thought. Natural and moral philosophy, by contrast, can each have an empirical part: physics determines laws of nature as objects of experience, ethics the laws of the human will so far as affected by nature.
Chapter 1
Why does Kant say a metaphysic of morals is indispensably necessary?
Kant argues it is necessary not merely for speculative reasons, to investigate the a priori sources of practical principles, but because morals are liable to corruption without a supreme canon for judging them. For an action to be morally good it must not only conform to the law but be done for the sake of the law; only pure philosophy lets us seek the moral law in its purity and genuineness.
Chapter 1
Where must the basis of moral obligation be sought, according to Kant?
Kant argues that if a law is to have moral force it must carry absolute necessity, as with 'Thou shalt not lie,' which is not valid for men alone. Therefore the basis of obligation must not be sought in human nature or worldly circumstances, but a priori simply in the conception of pure reason; a precept resting even slightly on an empirical basis may be a practical rule but never a moral law.
Chapter 1
Section 24 cards
How does Kant distinguish a metaphysic of morals from Wolf's general practical philosophy?
Kant argues that Wolf's general practical philosophy considers volition in general, including empirical motives drawn from psychology, and treats all motives as homogeneous, judging only their amount. A metaphysic of morals, by contrast, must examine the idea and principles of a possible pure will—a will determined solely by a priori principles without empirical motives. Kant compares the difference to that between general logic and transcendental philosophy.
Chapter 2
Why does Kant title this work Fundamental Principles rather than a Critique of Pure Practical Reason?
Kant says a complete critique of pure practical reason would require showing its identity with speculative reason in a common principle, which would demand considerations of a wholly different kind that would perplex the reader. He also notes moral reason easily reaches correctness even in common understanding, unlike theoretical reason, which is wholly dialectical. So he issues fundamental principles first, reserving the fuller critique.
Chapter 2
What method and division does Kant adopt for this work?
Kant proceeds analytically from common knowledge to the determination of its ultimate principle, then synthetically from examination of that principle and its sources back down to common knowledge where it is employed. The work divides into three sections: transition from common rational moral knowledge to philosophical, from popular moral philosophy to the metaphysic of morals, and from the metaphysic of morals to the critique of pure practical reason.
Chapter 2
Why does Kant say a good will is the only thing good without qualification?
Kant argues that talents of mind and qualities of temperament, though good and desirable, can become bad if the will using them is not good; likewise gifts of fortune such as power, riches, and happiness inspire presumption without a good will to correct them. Even self-control and calm deliberation presuppose a good will, since a villain's coolness makes him more abominable. Thus a good will is the indispensable condition of being worthy of happiness.
Chapter 2
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According to Kant, what makes a good will good?
Kant argues a good will is good not because of what it performs or effects, nor by its aptness for attaining some proposed end, but simply by virtue of the volition—it is good in itself. Even if fortune or a step-motherly nature leaves it wholly unable to accomplish its purpose, it would still shine like a jewel by its own light, and its usefulness or fruitlessness can neither add nor take away from its value.
Chapter 3
Why would nature have chosen badly if happiness were reason's purpose?
Kant argues that in an organized being no organ exists without being fittest for its purpose. If nature intended the creature's conservation, welfare, or happiness, reason would be a bad choice, since instinct would prescribe conduct far more surely and attain that end more certainly. Reason, with its weak insight, would only contemplate and admire the happy constitution, not meddle bunglingly with nature's plan for happiness.
Chapter 3
What does Kant observe about cultivated reason and satisfaction?
Kant observes that the more a cultivated reason deliberately pursues the enjoyment of life and happiness, the more the man fails of true satisfaction. From this arises misology, a hatred of reason, especially in those most experienced in its use, who find they have brought more trouble on themselves than gained happiness and envy the common stamp of men who follow instinct. Kant says this judgement reflects the idea that existence has a nobler end than happiness.
Chapter 3
What is reason's true destination, and how does it relate to happiness?
Since reason cannot guide the will with certainty toward satisfying wants, and instinct would lead there more surely, Kant concludes reason's true destination is to produce a will good in itself, not merely good as a means. This good will is the supreme good and condition of every other, even the desire for happiness. Reason may interfere with happiness without nature failing her purpose, since reason's satisfaction comes from attaining an end it determines itself.
Chapter 3
Section 44 cards
Why does Kant say the prudent tradesman's honest pricing lacks moral worth?
Kant argues the tradesman who keeps a fixed price for everyone, so a child buys as cheaply as anyone, acts honestly but not from duty. His own advantage requires it, and we cannot suppose he has a direct inclination toward buyers. The action is done neither from duty nor inclination, but merely with a selfish view, so it has no true moral worth.
Chapter 4
When does preserving one's life have moral worth, according to Kant?
Kant holds that maintaining life is a duty, but most people's anxious care for it comes from direct inclination, so their maxim has no moral import. Only if adversity and hopeless sorrow have removed all relish for life, and the person wishes for death yet preserves his life without loving it—not from inclination or fear but from duty—does his maxim have moral worth.
Chapter 4
What does Kant claim about the philanthropist who acts from duty rather than sympathy?
Kant argues that beneficence from natural sympathy, however proper and amiable, has no true moral worth; it ranks with other inclinations. If sorrow clouds the philanthropist's mind, extinguishing sympathy, and he still benefits others simply from duty, then first his action has genuine moral worth. Kant says this is where the highest moral worth of character is brought out.
Chapter 4
What is Kant's second proposition about the source of moral worth?
Kant states that an action done from duty derives its moral worth not from the purpose to be attained but from the maxim by which it is determined. It does not depend on realizing the object of the action, but merely on the principle of volition, without regard to any object of desire. The will, standing between a priori formal principle and a posteriori material spring, must be determined by the formal principle.
Chapter 4
Section 54 cards
What is duty, according to Kant's third proposition?
Kant states that duty is the necessity of acting from respect for the law. An action done from duty must wholly exclude the influence of inclination and every object of the will, leaving only the law objectively and pure respect for it subjectively to determine the will. The maxim is to follow this law even to the thwarting of all inclinations.
Chapter 5
Where does Kant locate the moral worth of an action?
The author argues moral worth lies not in the effect expected from an action, nor in any principle borrowing its motive from that expected effect. Even promoting others' happiness could be brought about by other causes. Moral good consists in the conception of law in itself determining the will, a good already present in the person acting, not awaited in the result.
Chapter 5
How does Kant define respect and distinguish it from inclination and fear?
Kant holds respect is a feeling, but self-wrought by a rational concept rather than received through influence, so it differs from feelings of inclination or fear. It is consciousness that one's will is subordinate to a law, an effect of the law on the subject, not its cause. Its object is only the law we impose on ourselves yet recognize as necessary.
Chapter 5
What test does Kant use to decide whether a lying promise is consistent with duty?
Kant asks whether one could will one's maxim—to extricate oneself from difficulty by a false promise—to hold as a universal law for oneself and others. He finds one can will the lie but cannot will that lying be universal, since then no promises would exist; the maxim, universalized, would destroy itself.
Chapter 5
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According to Kant, what single test tells an ordinary person whether a maxim is morally good?
Kant says no deep penetration is needed: one simply asks whether one can also will that one's maxim become a universal law. If it cannot enter a possible universal legislation, it must be rejected—not because of any disadvantage to oneself or others, but because reason demands respect for such legislation. Acting from pure respect for this practical law is what constitutes duty.
Chapter 6
How does Kant compare common practical judgement with theoretical judgement?
Kant argues common practical judgement has a great advantage over theoretical judgement. In theory, when common reason departs from experience and the senses, it falls into inconceivabilities, contradictions, and uncertainty. But in the practical sphere, once it excludes all sensible springs from practical laws, its judgement shows to advantage—becoming subtle and, Kant claims, almost surer of hitting the mark than a philosopher.
Chapter 6
Why does Kant say common practical reason is compelled to enter philosophy?
Kant argues that against reason's commands of duty, man feels a powerful counterpoise in wants and inclinations summed up as happiness. Reason commands unyieldingly without promising anything to inclination, producing a natural dialectic that questions duty's validity, purity, and strictness. To escape this perplexity and avoid losing genuine moral principles, common reason steps into practical philosophy—not from speculative want, but on practical grounds.
Chapter 6
What does Kant admit about finding examples of actions done purely from duty?
Kant acknowledges that if we attend to experience, we meet frequent and just complaints that no single certain example can be found of the disposition to act from pure duty. Many things are done in conformity with duty, yet it remains doubtful whether they are done strictly from duty and so have moral worth. Some philosophers therefore denied this disposition exists, ascribing everything to refined self-love.
Chapter 6
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What does Kant say about deriving morality from human nature or experience?
Kant argues that if moral laws were merely empirical, we could not regard them as universal precepts binding on all rational creatures with absolute necessity. Experience cannot establish apodeictic laws. The supreme principle of morality must rest on pure reason, independent of all experience, since we cannot infer universal necessity from contingent human conditions.
Chapter 7
Section 83 cards
Why does Kant say a mixed ethics makes the mind waver?
Kant argues a mixed ethics, compounded partly of motives from feelings and inclinations and partly of conceptions of reason, makes the mind waver between motives that cannot be brought under any principle, leading to good only by accident and often to evil. The pure conception of duty, unmixed with empirical attractions, influences the human heart through reason alone more powerfully than all empirical springs, which it can master by degrees.
Chapter 8
According to Kant, what is the will, and when does obligation arise?
Kant holds that everything in nature works according to laws, but rational beings alone act according to the conception of laws, i.e., principles, and so have a will. The will is nothing but practical reason. If reason infallibly determines the will, actions objectively necessary are also subjectively necessary. But with men the will does not fully accord with reason, so determination by objective laws is obligation.
Chapter 8
How does Kant define an imperative and distinguish the practically good from the pleasant?
Kant says the conception of an objective principle, insofar as it is obligatory for a will, is a command of reason, and the formula of the command is an imperative. All imperatives are expressed by 'ought,' indicating the relation of an objective law of reason to a will not necessarily determined by it. The practically good determines the will through conceptions of reason on principles valid for every rational being, unlike the pleasant, which influences only through sensation from subjective causes.
Chapter 8
Section 94 cards
How does Kant distinguish an interest from an inclination?
Inclination is the dependence of desires on sensations and always indicates a want. Interest is the dependence of a contingently determinable will on principles of reason, found only in a dependent will, not in the Divine will. Kant adds that a human can take an interest in a thing without acting from interest: the practical interest concerns the action, the pathological interest concerns the object.
Chapter 9
Why do imperatives not apply to a holy or Divine will?
A perfectly good will is subject to objective laws of good but cannot be conceived as obliged to act lawfully, since by its subjective constitution it is determined only by the conception of good. Its volition already accords necessarily with the law, so 'ought' is out of place. Imperatives thus express the relation of objective laws to the subjective imperfection of a will such as the human one.
Chapter 9
What distinguishes a hypothetical from a categorical imperative?
A hypothetical imperative represents an action as practically necessary as a means to something else willed, so the action is good only as a means. A categorical imperative represents an action as necessary of itself, without reference to another end, conceived as good in itself and the principle of a will conforming to reason. Hypothetical imperatives are problematical or assertorial; the categorical is apodeictic.
Chapter 9
What are Kant's three kinds of imperatives and their obligations?
Kant names them rules of skill (technical, belonging to art), counsels of prudence (pragmatic, to welfare), and commands or laws of morality (moral). Only law involves unconditional objective necessity and universal validity. Counsels involve necessity only under a contingent subjective condition, depending on whether a person counts something as part of happiness; the categorical imperative is limited by no condition.
Chapter 9
Section 104 cards
How does Kant define a pragmatic sanction or pragmatic history?
Kant proposes that sanctions are called pragmatic when they flow not from the law of states as necessary enactments but from precaution for the general welfare. A history is composed pragmatically when it teaches prudence, instructing the world how to provide for its interests better, or at least as well as, people of former times did.
Chapter 10
Why is an imperative of skill possible as an analytical proposition?
Kant argues whoever wills the end also wills, so far as reason decides conduct, the means in his power indispensably necessary thereto. This proposition is analytical as regards volition: willing an object as my effect already thinks my causality as acting cause, i.e., the use of means. Synthetical propositions may define the means, but they concern the object, not the principle of the will.
Chapter 10
Why can the imperatives of prudence not strictly command?
Kant holds the notion of happiness is so indefinite that no one can say definitely what he really wishes, since its elements are empirical yet the idea requires an absolute whole, a maximum of welfare in present and future circumstances. Only an omniscient being could determine what makes one happy, so prudence offers empirical counsels rather than precepts commanding objectively necessary actions.
Chapter 10
Why does Kant say we cannot prove a categorical imperative by example?
Kant argues we cannot make out empirically whether a categorical imperative exists at all, and fears that seemingly categorical ones may be hypothetical at bottom. Even in a case like not making a lying promise, fear of disgrace or obscure dread of other dangers may secretly influence the will. Experience only shows we do not perceive a cause, not that it is absent.
Chapter 10
Section 114 cards
According to Kant, why does only the categorical imperative count as a practical law?
Kant argues that hypothetical imperatives are necessary only for attaining some arbitrary purpose, so they are contingent—one can escape the precept by abandoning the purpose. The categorical imperative, by contrast, commands unconditionally and leaves the will no liberty to choose the opposite, so it alone carries the necessity required of a law.
Chapter 11
What is the sole categorical imperative Kant formulates, and what does it require?
Kant states there is but one categorical imperative: act only on that maxim whereby you can at the same time will that it should become a universal law. Because the law contains no restricting conditions, the imperative represents only the necessity that maxims conform to universal law. He restates it as: act as if the maxim of your action were to become by your will a universal law of nature.
Chapter 11
How does Kant distinguish a maxim from a practical law?
Kant defines a maxim as a subjective principle of action, containing the practical rule reason sets according to the conditions of the subject—often its ignorance or inclinations—so it is the principle on which the subject acts. The law is the objective principle valid for every rational being, the principle on which it ought to act, which is an imperative.
Chapter 11
How does Kant use the false-promise example to test a maxim?
A man in need considers borrowing money and promising to repay while knowing he cannot. His maxim: whenever in want of money, borrow and promise repayment though unable to repay. Universalized, no one would believe promises, so promising itself and its purpose become impossible. Kant concludes the maxim cannot hold as a universal law of nature because it contradicts itself.
Chapter 11
Section 124 cards
Why can the talented person not will his maxim of neglecting his gifts as universal law?
Kant argues that a system of nature could subsist if everyone (like the South Sea islanders) let talents rest in idleness and enjoyment. But a rational being necessarily wills that his faculties be developed, since they serve him for all sorts of possible purposes. So the maxim can be conceived as universal law but cannot be willed as one.
Chapter 12
Why is the prosperous man's refusal to help others not willable as universal law?
Though such a universal law of nature might let the human race subsist, a will resolving it would contradict itself: many cases might occur in which one would need the love and sympathy of others, and by such a law sprung from one's own will one would deprive oneself of all hope of the aid one desires.
Chapter 12
How does Kant distinguish strict duty from meritorious duty?
Some maxims cannot without contradiction even be conceived as a universal law of nature; these violate strict or rigorous (inflexible) duty. In others this intrinsic impossibility is not found, but it is still impossible to will their maxim as universal law, since such a will would contradict itself; these violate only laxer (meritorious) duty.
Chapter 12
What does Kant conclude when we examine ourselves during a transgression of duty?
Kant argues we do not in fact will our maxim as a universal law, since that is impossible; we will the opposite to remain universal while making an exception in our own favour. This shows we really recognize the validity of the categorical imperative and only allow ourselves exceptions we think unimportant and forced from us.
Chapter 12
Section 134 cards
Why does Kant say empirical elements are prejudicial to the purity of morals?
Kant argues that the worth of an absolutely good will consists in its principle being free from all influence of contingent grounds, which only experience can furnish. Empirical elements are not merely incapable of aiding the principle of morality but positively harmful to its purity. He warns against the lax habit of seeking moral principle among empirical motives, since weary human reason gladly rests on this pillow and substitutes a bastard morality for virtue.
Chapter 13
What distinction does Kant draw between subjective ends and objective ends?
The subjective ground of desire is the spring, while the objective ground of volition is the motive. Subjective ends rest on springs and are material, relative ends that can ground only hypothetical imperatives. Objective ends depend on motives valid for every rational being. Kant argues that only something whose existence has absolute worth—an end in itself—could be the source of a categorical imperative.
Chapter 13
According to Kant, what distinguishes persons from things?
Kant argues that irrational beings, whose existence depends on nature rather than our will, have only relative value as means and are called things. Rational beings are called persons because their nature points them out as ends in themselves—something that must not be used merely as means—and so restricts freedom of action and is an object of respect. Persons are objective ends for which no other can be substituted.
Chapter 13
What is the practical imperative Kant formulates regarding humanity?
Kant states the practical imperative: so act as to treat humanity, whether in thine own person or in that of any other, in every case as an end withal, never as means only. Its foundation is that rational nature exists as an end in itself. Each person necessarily conceives their own existence this way, and every other rational being regards its existence similarly, making this a subjective principle that is also objective and universal.
Chapter 13
Section 144 cards
Why does Kant say a lying promise to another person is wrong?
Kant argues that one who makes a lying promise uses another man merely as a means, since the person deceived cannot possibly assent to the mode of acting toward him and so cannot himself contain the end of the action. This violation of the principle of humanity is even more obvious in attacks on others' freedom and property, where persons are treated as means rather than as rational beings who must also be esteemed as ends.
Chapter 14
What does Kant say about the golden rule as a basis for duty?
Kant denies that the common rule 'quod tibi non vis fieri' can serve as the rule or principle, calling it only a deduction from the former with several limitations. It cannot be a universal law because it contains no principle of duties to oneself, nor of benevolence to others, nor of strict obligation between persons—on this principle a criminal could argue against the judge who punishes him.
Chapter 14
What distinguishes contingent duties to oneself from strict ones?
For contingent (meritorious) duties to oneself, it is not enough that the action merely does not violate humanity in our own person as an end in itself; it must also harmonize with it. Humanity contains capacities of greater perfection belonging to the end nature has in view for humanity in ourselves, and neglecting these might be consistent with maintaining humanity as an end but not with advancing that end.
Chapter 14
Why is the principle that rational nature is an end in itself not borrowed from experience?
Kant gives two reasons: it is universal, applying to all rational beings whatever, and experience cannot determine anything about them; and it presents humanity not as a subjective end men actually adopt, but as an objective end that must as a law constitute the supreme limiting condition of all our subjective ends. It must therefore spring from pure reason.
Chapter 14
Section 154 cards
What does Kant call the principle of the will giving universal laws, versus its opposite?
Kant calls it the principle of autonomy of the will: the will considers itself as giving universal laws in all its maxims. He contrasts this with every other principle, which he reckons as heteronomy. Under heteronomy the law does not originate from the will itself, so the will is obliged by something else, and the resulting imperative can only be conditional, never a moral command.
Chapter 15
What is a kingdom of ends, and is it real?
A kingdom is the union of different rational beings in a system by common laws. Abstracting from personal differences and private ends, Kant conceives all ends combined in a systematic whole, including rational beings as ends in themselves and their particular ends. Rational beings come under the law of treating themselves and others never merely as means but also as ends. Kant says it is certainly only an ideal.
Chapter 15
How does Kant distinguish members from sovereign in the kingdom of ends?
A rational being belongs as a member when, although giving universal laws, he is also himself subject to those laws. He belongs as sovereign when, while giving laws, he is not subject to the will of any other. Kant says one cannot hold the sovereign position merely by maxims, but only as a completely independent being without wants and with unrestricted power adequate to his will.
Chapter 15
According to Kant, what has dignity rather than mere value?
In the kingdom of ends everything has either value or dignity. What can be replaced by an equivalent has value; what admits no equivalent has dignity. Skill and diligence in labour have market value; wit, imagination, and humour have fancy value. Morality, and humanity as capable of it, alone has dignity, as do fidelity to promises and benevolence from principle, whose worth lies in the maxims of the will.
Chapter 15
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What is the basis of the dignity of human and every rational nature?
The author argues that autonomy is the basis of the dignity of human and of every rational nature. Virtue's lofty claims are justified because the rational being has the privilege of participating in giving universal laws, qualifying him as a member of a possible kingdom of ends. Nothing has worth except what the law assigns, so the legislation itself possesses dignity, an unconditional incomparable worth, for which respect is the fitting expression.
Chapter 16
How do the three formulae of the moral principle relate to one another?
The chapter states the three modes of presenting the principle are at bottom only formulae of the very same law, each involving the other two. Their difference is subjectively rather than objectively practical, meant to bring the idea of reason nearer to intuition by analogy and nearer to feeling. They correspond to form (universality), matter (the end), and complete characterization (the kingdom of ends).
Chapter 16
According to the chapter, how should moral judgement of actions proceed?
The author argues that in forming moral judgement of actions it is better to proceed always on the strict method, starting from the general formula of the categorical imperative: act according to a maxim which can at the same time make itself a universal law. Bringing one and the same action under the three specified conceptions is, however, very useful for gaining an entrance for the moral law and bringing it nearer to intuition.
Chapter 16
How does ethics' kingdom of ends differ from teleology's?
The chapter's note states that teleology considers nature as a kingdom of ends, while ethics regards a possible kingdom of ends as a kingdom of nature. In the first case the kingdom of ends is a theoretical idea adopted to explain what actually is; in the latter it is a practical idea adopted to bring about what is not yet but can be realized by our conduct, namely if it conforms to this idea.
Chapter 16
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What distinguishes a rational being as an end in himself, according to Kant?
Kant argues it is the fitness of one's maxims for universal legislation. Because of this capacity, a rational being must regard himself as legislating universally and possesses dignity above mere physical beings. This makes possible a kingdom of ends, a world of rational beings who are law-giving persons and members of that kingdom.
Chapter 17
What is the difference between a kingdom of nature and a kingdom of ends?
Kant says a kingdom of ends is possible only by analogy with a kingdom of nature. The former operates through maxims, which are self-imposed rules; the latter operates through laws of efficient causes acting under external necessitation. Nature is viewed as a machine, but insofar as it refers to rational beings as its ends, it is called a kingdom of nature.
Chapter 17
What is the paradox Kant identifies regarding the dignity of man as a rational creature?
Kant argues the paradox is that mere dignity of man as a rational creature, with no other end or advantage to be attained, should serve as an inflexible precept of the will. The sublimity of the maxim consists precisely in its independence from all such springs of action, which makes every rational subject worthy to be a legislative member in the kingdom of ends.
Chapter 17
What distinguishes autonomy of the will from heteronomy, and which yields categorical imperatives?
Kant defines autonomy as the will being a law to itself, independent of any property of the objects of volition. Heteronomy occurs when the will seeks its law outside itself, in an object, yielding only hypothetical imperatives: 'I ought to do something because I wish for something else.' The moral, categorical imperative says: 'I ought to do so and so, even though I should not wish for anything else.'
Chapter 17
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Why does Kant say empirical principles cannot ground moral laws?
Kant argues empirical principles fail because moral laws must hold universally for all rational beings with unconditional practical necessity. When grounded in the particular constitution of human nature or accidental circumstances, that universality and necessity are lost. He adds that the principle of private happiness is most objectionable since it puts motives to virtue and vice in the same class, extinguishing the specific difference between them.
Chapter 18
Why does Kant prefer the ontological conception of perfection to the theological one?
Kant says the ontological conception, despite being empty and indefinite and tending to circle back to presuppose morality, is preferable. First, we have no intuition of divine perfection and can only deduce it from our own conceptions, chiefly morality, producing a gross circle. Second, avoiding that circle leaves only a notion of the Divine will as desire of glory and dominion plus might and vengeance, a foundation directly opposed to morality.
Chapter 18
What makes all heteronomous principles necessarily miss their aim?
Kant argues that whenever an object of the will must be supposed so a rule can be prescribed, the rule is heteronomy and the imperative is conditional: if or because one wishes for this object, one should act so. Such an imperative can never command morally, that is, categorically. The will is determined not immediately by the conception of the action but by the foreseen effect, so the law is given by nature and is contingent.
Chapter 18
What is an absolutely good will's principle, according to Kant?
Kant states that an absolutely good will, whose principle must be a categorical imperative, is indeterminate as regards all objects and contains merely the form of volition generally. That form is autonomy: the capability of the maxims of every good will to make themselves a universal law is itself the only law the will of every rational being imposes on itself, without assuming any spring or interest as a foundation.
Chapter 18
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What proposition does Kant say expresses the will being a law to itself?
Kant says the proposition 'The will is in every action a law to itself' only expresses the principle: to act on no other maxim than one that can also have itself as an object as a universal law. This is precisely the formula of the categorical imperative and the principle of morality, so that a free will and a will subject to moral laws are one and the same.
Chapter 19
Why must freedom be ascribed to all rational beings, not just ourselves?
Kant argues morality serves as a law for us only because we are rational beings, so it must hold for all rational beings, and since it is deduced from freedom, freedom must belong to all rational beings. He claims every being that cannot act except under the idea of freedom is practically really free, bound by the same laws as one proven free.
Chapter 19
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What circle does Kant admit arises between freedom and the moral law?
Kant freely admits a circle: in the order of efficient causes we assume ourselves free so that in the order of ends we may conceive ourselves as subject to moral laws, and then we conceive ourselves as subject to these laws because we have attributed freedom of will to ourselves. Freedom and self-legislation of will are both autonomy, reciprocal conceptions, so one must not be used to explain the other.
Chapter 20
Why is the moral law expressed as an 'ought' for beings affected by sensibility?
For a purely rational being, reason would determine action without hindrance, so the 'I ought' is properly an 'I would,' valid for every rational being. But beings like us are also affected by springs of a different kind, namely sensibility, and do not always do what reason alone would do. For these, the necessity is expressed only as an 'ought,' and the subjective necessity differs from the objective.
Chapter 20
What distinction lets Kant escape the circle, and what does it establish about self-knowledge?
Kant asks whether we occupy different points of view when we think ourselves as causes through freedom and when we conceive ourselves from our actions as effects. Ideas from the senses reveal objects only as they affect us, as appearances, never as things in themselves. So a man knows himself only through inner sense and appearances, yet must suppose something else as their basis, his ego, reckoning himself as belonging to the world of sense in respect of receptivity and to the intellectual world in respect of pure activity.
Chapter 20
What does Kant say about the common understanding's belief in something invisible behind sense objects?
Kant remarks that even the commonest understanding is inclined to suppose behind the objects of the senses something else invisible and acting of itself, a conclusion the reflecting man must reach about all things presented to him. But they spoil it by sensualizing this invisible again, wanting to make it an object of intuition, so they do not become a whit the wiser.
Chapter 20
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How does Kant distinguish reason from understanding?
Kant holds that understanding is a spontaneity that cannot think without the use of sensibility, producing only conceptions that bring sense intuitions under rules and unite them in one consciousness. Reason, by contrast, shows pure spontaneity in the case of ideas, far transcends what sensibility can give it, and distinguishes the world of sense from that of understanding, thereby prescribing the limits of the understanding itself.
Chapter 21
What two points of view can a rational being take on himself?
As a rational being, man must regard himself as belonging not to the world of sense but to the world of understanding. So he has two standpoints: as a member of the world of sense he is subject to laws of nature, which is heteronomy; as a member of the intelligible world he stands under laws independent of nature, founded not in experience but in reason alone.
Chapter 21
Why does Kant say the idea of freedom is not circular with the moral law?
Kant argues the earlier suspicion of a latent circle is removed because, when we conceive ourselves as free, we transfer ourselves into the world of understanding as members and recognize the autonomy of the will with its consequence, morality. Conversely, when we conceive ourselves as under obligation, we consider ourselves as belonging both to the world of sense and to the world of understanding.
Chapter 21
What makes a categorical imperative possible, according to Kant?
Kant argues that the idea of freedom makes me a member of an intelligible world, in which all my actions would conform to the autonomy of the will; but since I also intuit myself as a member of the world of sense, they ought so to conform. This "ought" is a synthetic a priori proposition, adding the pure practical will of the intelligible world as the supreme condition of the will affected by sensible desires.
Chapter 21
Section 224 cards
How does Kant distinguish freedom from nature regarding their reality?
Kant holds that freedom is only an idea of reason whose objective reality in itself is doubtful, while nature is a concept of the understanding that proves its reality in examples of experience. Yet freedom remains indispensable for practical purposes, and philosophy must assume no real contradiction exists between freedom and physical necessity in the same human actions.
Chapter 22
How does Kant resolve the apparent contradiction between freedom and natural necessity?
Kant argues the illusion arises because we think of man in different senses: as a phenomenon in the world of sense subject to natural laws, and as an intelligence or thing in itself independent of sensible impressions. Both can and must hold good of the same subject simultaneously, so no real contradiction exists. Removing this apparent contradiction is the task of speculative philosophy.
Chapter 22
What does practical reason do when it thinks itself into a world of understanding?
Kant says it does not transcend its limits, as it would by trying to enter through intuition or sensation. This is a negative thought regarding the world of sense, positive only in that freedom as a negative characteristic is conjoined with a faculty and causality of reason, namely a will whose maxims can have universal validity as law. It may not borrow an object of will from that world.
Chapter 22
What does Kant say about responsibility for inclinations versus the will?
Kant states that man does not hold himself responsible for inclinations and appetites, nor ascribe them to his proper self, the will. He ascribes to his will only the indulgence he yields them if he lets them influence his maxims to the prejudice of the rational laws of the will. The causality of such free actions lies in him as an intelligence under the laws of an intelligible world.
Chapter 22
Section 234 cards
Why can freedom never be comprehended or explained, according to Kant?
Kant argues freedom is a mere idea whose objective reality cannot be shown according to laws of nature, nor in any possible experience, so it can never be understood or supported by example or analogy. It holds only as a necessary hypothesis of reason for a being conscious of a will—a faculty of determining itself by laws of reason independently of natural instincts. Where determination by natural laws ceases, explanation ceases too.
Chapter 23
How does Kant dissolve the supposed contradiction between freedom and natural law?
The contradiction arises because objectors consider man only as an appearance, then insist on treating him as appearance even when asked to think of him as intelligence, a thing in itself. Kant argues that behind appearances there must lie hidden things in themselves, whose laws need not match those governing appearances. Once this is admitted, the contradiction of a will withdrawn from natural laws disappears.
Chapter 23
What does Kant mean by 'interest,' and which interest alone is pure?
Interest is that by which reason becomes practical, i.e., a cause determining the will; only rational beings are said to take an interest in things. Reason takes a direct interest in action only when the universal validity of its maxims alone suffices to determine the will—such an interest alone is pure. If reason determines the will only via another object of desire or a particular feeling, the interest is indirect and empirical.
Chapter 23
To what extent can the question 'How a categorical imperative is possible' be answered?
Kant says we can assign the only hypothesis on which it is possible—the idea of freedom—and discern the necessity of this hypothesis, which suffices for the practical exercise of reason and conviction of the moral law's validity. But how this hypothesis itself is possible can never be discerned by any human reason. Given a free will of an intelligence, its autonomy follows as a necessary consequence.
Chapter 23
Section 244 cards
What remains of pure reason after abstracting all knowledge of objects?
Only the form remains: the practical law of the universality of maxims. Combined with the conception of reason as a possible efficient cause, this gives a cause determining the will. The author argues this is the extreme limit of moral inquiry, where all knowledge of the intelligible world stops.
Chapter 24
Why does Kant say the intelligible world idea is useful despite being unknowable?
The author argues that although all knowledge stops at its threshold, the idea of a pure world of understanding as a system of all intelligences is a legitimate idea for rational belief. It produces a lively interest in the moral law through the noble ideal of a universal kingdom of ends in themselves.
Chapter 24
Why can't human reason conceive the absolute necessity of the categorical imperative?
The author argues this is no fault in the deduction of the supreme principle of morality but an objection to human reason in general. Reason can only discern necessity by supposing a condition, which would postpone satisfaction endlessly. The law cannot be explained by an interest, since it would then cease to be supreme.
Chapter 24
What does Kant claim we can comprehend about the moral imperative's necessity?
The author argues that while we do not comprehend the practical unconditional necessity of the moral imperative, we yet comprehend its incomprehensibility. This is all that can be fairly demanded of a philosophy striving to carry its principles to the very limit of human reason.
Chapter 24
Source and licence
Text used: Project Gutenberg eBook #5682 (Public domain in the United States). Generated from the full text; cards paraphrase the source.
Version: Public domain edition. Retrieved 2026-10-26. Cards reviewed 2026-10-26.
These cards paraphrase the text for study. They are not a substitute for reading the book, and they do not reproduce long passages.
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