Combining Texts

All the ideas for 'Are there propositions?', 'Formal and Transcendental Logic' and 'Metaphysics of Morals II:Doctrine of Virtue'

unexpand these ideas     |    start again     |     specify just one area for these texts


45 ideas

1. Philosophy / A. Wisdom / 1. Nature of Wisdom
Moral self-knowledge is the beginning of all human wisdom [Kant]
     Full Idea: Moral self-knowledge, which seeks to penetrate into the depths (the abyss) of one's heart that are quite difficult to fathom, is the beginning of all human wisdom.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 441 I.I)
     A reaction: I'm not clear what I am supposed to be looking for on this quest. I'm guessing that being completely honest about one's own maxims in moral action would be a good start. And maybe confronting one's murkier desires.
1. Philosophy / E. Nature of Metaphysics / 6. Metaphysics as Conceptual
For any subject, its system of non-experiential concepts needs a metaphysics [Kant]
     Full Idea: A philosophy of any subject (a system of rational knowledge from concepts) requires a system of pure rational concepts independent of any conditions of intuition, that is, a metaphysics.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 375 Pref)
     A reaction: 'Pure rational concepts' must be a priori, and (in Kant's case) transcendental - i.e. discovered from the study of presuppositions. Does this actually say that the philosophies of science, biology, psychology, economics etc each needs a metaphysics?
2. Reason / A. Nature of Reason / 1. On Reason
Philosophers should not offer multiple proofs - suggesting the weakness of each of them [Kant]
     Full Idea: It is a highly unphilosophic expedient to resort to a number of proofs for one and the same proposition, consoling oneself that the multitude of reasons makes up for the inadequacy of any one of them taken by itself.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 403 Intro XIII)
     A reaction: This makes philosophical proofs sound very mathematical in character, whereas I think most reasons for a proposition given in philosophy are more like evidence, which can clearly accumulate in a rational way. Some maths proofs are better than others.
3. Truth / C. Correspondence Truth / 2. Correspondence to Facts
A true proposition seems true of one fact, but a false proposition seems true of nothing at all. [Ryle]
     Full Idea: Whereas there might be just one fact that a true proposition was like, we would have to say that a false proposition was unlike any fact. We could not speak of the fact that it was false of, so we could not speak of its being false of anything at all.
     From: Gilbert Ryle (Are there propositions? [1930], 'Objections')
     A reaction: Ryle brings out very nicely the point Russell emphasised so much, that the most illuminating studies in philosophy are of how falsehood works, rather than of how truths work. If I say 'the Queen is really a man' it is obvious what that is false of.
3. Truth / C. Correspondence Truth / 3. Correspondence Truth critique
Two maps might correspond to one another, but they are only 'true' of the country they show [Ryle]
     Full Idea: One map of Sussex is like another, but it is not true of that other map, but only of the county.
     From: Gilbert Ryle (Are there propositions? [1930], 'Objections')
     A reaction: One might question whether a map is in any sense 'true' of Sussex, though one must admit that there are good and bad maps of Sussex. The point is a nice one, which shows that there is no simple account of truth as correspondence.
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
Logic studies consequence, compatibility, contradiction, corroboration, necessitation, grounding.... [Ryle]
     Full Idea: Logic studies the way in which one thing follows from another, in which one thing is compatible with another, contradicts, corroborates or necessitates another, is a special case of another or the nerve of another. And so on.
     From: Gilbert Ryle (Are there propositions? [1930], IV)
     A reaction: I presume that 'and so on' would include how one thing proves another. This is quite a nice list, which makes me think a little more widely about the nature of logic (rather than just about inference). Incompatibility isn't a process.
5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic
Logicians presuppose a world, and ignore logic/world connections, so their logic is impure [Husserl, by Velarde-Mayol]
     Full Idea: Husserl maintained that because most logicians have not studied the connection between logic and the world, logic did not achieve its status of purity. Even more, their logic implicitly presupposed a world.
     From: report of Edmund Husserl (Formal and Transcendental Logic [1929]) by Victor Velarde-Mayol - On Husserl 4.5.1
     A reaction: The point here is that the bracketing of phenomenology, to reach an understanding with no presuppositions, is impossible if you don't realise what your are presupposing. I think the logic/world relationship is badly neglected, thanks to Frege.
Phenomenology grounds logic in subjective experience [Husserl, by Velarde-Mayol]
     Full Idea: The phenomenological logic grounds logical notions in subjective acts of experience.
     From: report of Edmund Husserl (Formal and Transcendental Logic [1929], p.183) by Victor Velarde-Mayol - On Husserl 4.5.1
     A reaction: I'll approach this with great caution, but this is a line of thought that appeals to me. The core assumptions of logic do not arise ex nihilo.
6. Mathematics / B. Foundations for Mathematics / 1. Foundations for Mathematics
Pure mathematics is the relations between all possible objects, and is thus formal ontology [Husserl, by Velarde-Mayol]
     Full Idea: Pure mathematics is the science of the relations between any object whatever (relation of whole to part, relation of equality, property, unity etc.). In this sense, pure mathematics is seen by Husserl as formal ontology.
     From: report of Edmund Husserl (Formal and Transcendental Logic [1929]) by Victor Velarde-Mayol - On Husserl 4.5.2
     A reaction: I would expect most modern analytic philosophers to agree with this. Modern mathematics (e.g. category theory) seems to have moved beyond this stage, but I still like this idea.
7. Existence / D. Theories of Reality / 8. Facts / c. Facts and truths
Many sentences do not state facts, but there are no facts which could not be stated [Ryle]
     Full Idea: There are many sentences which do not state facts, while there are no facts which (in principle) could not be stated.
     From: Gilbert Ryle (Are there propositions? [1930], 'Substitute')
     A reaction: Hm. This seems like a nice challenge. The first problem would be infinite facts. Then complex universal facts, beyond the cognizance of any mind. Then facts that change faster than thinking can change. Do you give up yet? Then there's....
10. Modality / B. Possibility / 1. Possibility
That a concept is not self-contradictory does not make what it represents possible [Kant]
     Full Idea: That the concept of a thing is possible (not self-contradictory) is not yet sufficient for assuming the possibility of the thing itself (the objective reality of the concept).
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 382 Intro I)
     A reaction: I take this to be an inkling of Kripke's a posteriori scientific necessities, which place far greater restrictions on the possibilies of what we seem to have conceived, in addition to the mere need for consistency.
12. Knowledge Sources / B. Perception / 3. Representation
Representation assumes you know the ideas, and the reality, and the relation between the two [Ryle]
     Full Idea: The theory of Representative Ideas begs the whole question, by assuming a) that we can know these 'Ideas', b) that we can know the realities they represent, and c) we can know a particular 'idea' to be representative of a particular reality.
     From: Gilbert Ryle (Are there propositions? [1930], 'Objections')
     A reaction: Personally I regard the ideas as immediate (rather than acquired by some knowledge process), and I am dimly hoping that they represent reality (or I'm in deep trouble), and I am struggling to piece together the reality they represent. I'm happy with that.
16. Persons / A. Concept of a Person / 4. Persons as Agents
Within nature man is unimportant, but as moral person he is above any price [Kant]
     Full Idea: In the system of nature, man is a being of slight importance ....but man regarded as a person, that is as the subject of a morally practical reason, is exalted above any price.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 434 I.I)
     A reaction: See what you've done, John Locke? You've given yet another ground for claiming that humans are angels or demi-gods, exalted far above our animal cousins.
18. Thought / A. Modes of Thought / 6. Judgement / a. Nature of Judgement
If you like judgments and reject propositions, what are the relata of incoherence in a judgment? [Ryle]
     Full Idea: Those who find 'judgments' everywhere and propositions nowhere find that some judgments cohere whereas others are incoherent. What is the status of the terms between which these relations hold?
     From: Gilbert Ryle (Are there propositions? [1930], IV)
     A reaction: Ryle is playing devil's advocate, but this strikes me as a nice point. I presume Russell after 1906 is the sort of thinker he has in mind.
19. Language / A. Nature of Meaning / 1. Meaning
Husserl and Meinong wanted objective Meanings and Propositions, as subject-matter for Logic [Ryle]
     Full Idea: It is argued by Husserl and (virtually) by Meinong that only if there are such entities as objective Meanings - and propositions are just a species of Meaning - is there anything for Logic to be about.
     From: Gilbert Ryle (Are there propositions? [1930], IV)
     A reaction: It is presumably this proposal which led to the scepticism about meanings in Wittgenstein, Quine and Kripke. The modern view, which strikes me as right, is that logic is about inference, and so doesn't need a subject-matter.
19. Language / A. Nature of Meaning / 3. Meaning as Speaker's Intention
When I utter a sentence, listeners grasp both my meaning and my state of mind [Ryle]
     Full Idea: If I have uttered my sentence aloud, a listener can both understand what I say or grasp my meaning, and also infer to my state of mind.
     From: Gilbert Ryle (Are there propositions? [1930], I)
     A reaction: This simple observations seems rather important. If we shake written words onto the floor, they might add up to a proper sentence, but half of the point of a sentence is missing. Irony trades on the gap between meaning and state of mind.
19. Language / D. Propositions / 1. Propositions
'Propositions' name what is thought, because 'thoughts' and 'judgments' are too ambiguous [Ryle]
     Full Idea: As the orthodox terms 'thoughts' and 'judgments' are equivocal, since they may equally well denote 'thinkings' as 'what-is-thought', the 'accusatives' of acts of thinking have come to be called 'propositions'.
     From: Gilbert Ryle (Are there propositions? [1930], I)
     A reaction: I have understood propositions to be capable of truth or falsity. 'What is thought' could be a right old jumble of images and disjointed fragments. Propositions are famous for their unity!
19. Language / D. Propositions / 4. Mental Propositions
Several people can believe one thing, or make the same mistake, or share one delusion [Ryle]
     Full Idea: We ordinarily find no difficulty in saying of a given thing that several people believe it and so, if they think it false, 'make the same mistake' or 'labour under the same delusion'.
     From: Gilbert Ryle (Are there propositions? [1930], IV)
     A reaction: Ryle is playing devil's advocate, but this (like 13980) strikes me as quite good support for propositions. I suppose you can describe these phenomena as assent to sentences, but they might be very different sentences to express the same delusion.
We may think in French, but we don't know or believe in French [Ryle]
     Full Idea: Although we speak of thinking in French, we never talk of knowing or believing or opining in French.
     From: Gilbert Ryle (Are there propositions? [1930], 'Substitute')
     A reaction: Once again Ryle is playing devil's advocate, but he does it rather well, and offers good support for my belief in propositions. I love this. 'I know, in French, a bank where the wild thyme blows'.
19. Language / D. Propositions / 6. Propositions Critique
There are no propositions; they are just sentences, used for thinking, which link to facts in a certain way [Ryle]
     Full Idea: There are no substantial propositions...There is just a relation between grammatical structure and the logical structure of facts. 'Proposition' denotes the same as 'sentence' or 'statement'. A proposition is not what I think, but what I think or talk in.
     From: Gilbert Ryle (Are there propositions? [1930], 'Conclusions')
     A reaction: The conclusion of Ryle's discussion, but I found his support for propositions much more convincing than his critique of them, or his attempt at an alternative linguistic account. He never mentioned animals, so he self-evidently hasn't grasped the problem.
If we accept true propositions, it is hard to reject false ones, and even nonsensical ones [Ryle]
     Full Idea: All the arguments for the subsistence of true propositions seem to hold good for the subsistence of false ones. We might even have to find room for absurd or nonsensical ones like 'some round squares are not red-headed'.
     From: Gilbert Ryle (Are there propositions? [1930], 'Objections')
     A reaction: A particularly nice example of a Category Mistake from the man who made them famous. Why can't we just make belief a proposition attitude, so I equally believe 'sea is blue', 'grass is pink' and 'trees are bifocal', but the status of my belief varies?
22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / a. Preconditions for ethics
Duty is impossible without prior moral feeling, conscience, love and self-respect [Kant]
     Full Idea: Moral feeling, conscience, love of one's neighbour, and respect for oneself (self-esteem). There is no obligation to have these, because they lie at the basis of morality, as subjective conditions of receptiveness to the concept of duty.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 399 Intro XII)
     A reaction: A bit of a revelation, this one, because I thought the only precondition for Kantian morality was rationality. Turns out that he agrees with Aristotle (Idea 46) that you can't started in morality if your heart isn't in the right place.
22. Metaethics / A. Ethics Foundations / 2. Source of Ethics / h. Expressivism
Moral principles do not involve feelings [Kant]
     Full Idea: No moral principle is based on any feeling whatsoever.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 376 Pref)
22. Metaethics / B. Value / 1. Nature of Value / f. Ultimate value
The love of man is required in order to present the world as a beautiful and perfect moral whole [Kant]
     Full Idea: Love of man is required by itself, in order to present the world as a beautiful moral whole in its full perfection, even if no account is taken of advantages (of happiness).
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 458 I.II)
     A reaction: For me, this illustrates the basic problem with Kant. In the Groundwork he presents morality as arising from pure reason, deriving moral maxims from contradictions, but here we find a totally ungrounded assertion of grand traditional values.
All morality directs the will to love of others' ends, and respect for others' rights [Kant]
     Full Idea: All moral relations of rational beings, which involve a principle of the harmony of the will of one with another, can be reduced to love and respect. Love reduces one's will to another's end, and respect to another's right.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 488 II)
     A reaction: It all comes out too neat and tidy in Kant. Love doesn't merely focus on another person's 'ends', and respect should be for a lot more than another person's mere 'rights'. They'd have to be natural rights, because some societies restrict rights.
22. Metaethics / B. Value / 2. Values / g. Love
The duty of love is to makes the ends of others one's own [Kant]
     Full Idea: The duty of love for one's neighbour can be expressed as the duty to make others' ends my own (provided they are not immoral).
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 449 I.II)
     A reaction: An interesting idea. Kant's remarks on love and respect seem distorted, to shoehorn them into his system of end/means and maxims. If I love someone, should I continually enquire what their current ends are?
23. Ethics / C. Virtue Theory / 1. Virtue Theory / a. Nature of virtue
A duty of virtue is a duty which is also an end [Kant]
     Full Idea: Only an end that is also a duty can be called a duty of virtue. ....[385] The necessary ends are one's own perfection, and the happiness of others.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 383 Intro II)
     A reaction: So virtues are a subset of duties. I don't think an Aristotelian virtue is anything like a duty. A soldier might do his duty, with no virtue at all. An even a Kantian categorical imperative duty can be formed without right feeling or good character.
Virtue is strong maxims for duty [Kant]
     Full Idea: Virtue is the strength of man's maxims in fulfilling his duty.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 394 Intro IX)
     A reaction: So virtue is just strong moral commitment. So what are we to make of the lists of distinctive virtues, found in every culture? How do they differ? Only in the areas of duty to which they refer? How do we possess some virtues without others?
The supreme principle of virtue is to find universal laws for ends [Kant]
     Full Idea: The supreme principle of the doctrine of virtue is: Act in accordance with a maxim of ends that it can be a universal law for everyone to have.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 395 Intro IX)
     A reaction: I'm not sure that any end can be a universal law. I certainly don't expect everyone to study philosophy. I suppose basic human ends, such as kindness and avoidance of suicide, are what he means. He's even more conformist than Aristotle!
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / c. Motivation for virtue
We are obliged to show the social virtues, but at least they make a virtuous disposition fashionable [Kant]
     Full Idea: Affability, sociability, courtesy, hospitality and gentleness in argument ...are merely the manners one is obliged to show in social intercourse, ...and so they promote a virtuous disposition by at least making virtue fashionable.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 473-4 I.II App)
     A reaction: His emphasis on rational duty forces him to diminish virtue, making it sound hypocritical. He needs Aristotle's distinction between the controlled [enkratic] man and the man of true virtue (which is rational and whole-hearted).
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / d. Teaching virtue
If virtue becomes a habit, that is a loss of the freedom needed for adopting maxims [Kant]
     Full Idea: If the practice of virtue were to become a habit the subject would suffer loss to that freedom in adopting his maxims which distinguishes an action done from duty.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 409 Intro XVI)
     A reaction: Looks like a misunderstanding of Aristotle, who always promotes the role of 'phronesis' [practical reason], and never advocates unthinking virtuous habits. I think Aristotle would ask how you select your maxim, if you lack the virtues.
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / f. The Mean
How do we distinguish a mean? The extremes can involve quite different maxims [Kant]
     Full Idea: Who will specify for me this mean between the two extremes? What distinguishes avarice (as a vice) from thrift (as a virtue) is not that avarice carries thift too far but that avarice has an entirely different principle (maxim).
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 404n Intro XIII)
     A reaction: He says one concerns enjoyment of possessions, and the other their mere possession. Similarly, reckless courage may aim at glory, while cowardice aims at survival. Aristotle is looking at circumstances, Kant at mental states.
If virtue is the mean between vices, then virtue is just the vanishing of vice [Kant]
     Full Idea: If the mean between prodigality and avarice is supposed to be one of degree, then one vice would pass over into the opposite vice only through the virtue. So virtue would simply be a diminished, or rather a vanishing vice.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 432 I.I)
     A reaction: Interesting, but not convincing. Doesn't the thought equally show that vice is a vanishing virtue? Aristotle gives the example of the quantity of food we eat, which obviously passes from starvation to appropriate diet to gluttony.
23. Ethics / C. Virtue Theory / 2. Elements of Virtue Theory / j. Unity of virtue
There is one principle of virtues; the virtues are distinguished by their objects [Kant]
     Full Idea: To think of several virtues (as one unavoidably does) is nothing other than to think of the various moral objects to which the will is led by the one principle of virtue.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 406 Intro XIII)
     A reaction: So Kant commits to the Greek ideal of the unity of virtue - but not for Greek reasons. The unity of duty is what concerns Kant.
23. Ethics / C. Virtue Theory / 3. Virtues / h. Respect
We can love without respect, and show respect without love [Kant]
     Full Idea: One can love one's neighbour though he might deserve but little respect, and can show him the respect necessary for every man regardless of the fact that he would hardly be judged worthy of love.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 448 I.II)
     A reaction: Not sure about this. Respect seems much clearer than love. You can train yourself and others to show respect, but you can't switch on love. Personally, I don't love strangers, but I try hard to respect them.
Respect is limiting our self-esteem by attending to the human dignity of other persons [Kant]
     Full Idea: Respect ...is to be understood as the maxim of limiting our self-esteem by the dignity of humanity in another person.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 449 I.II)
     A reaction: I can't see any direct connection between my own self-esteem and my respect for others, though in practice great vanity makes us neglect others. I also don't find the concept of 'dignity' very helpful. I think we should respect plants.
Disrespect is using a person as a mere means to my own ends [Kant]
     Full Idea: The duty of respect for my neighbour is contained in the maxim not to degrade any other man to a mere means to my ends (not to demand that another throw himself away in order to slave for my end).
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 449 I.II)
     A reaction: A weirdly narrow concept of respect. Is enslavement the only way to show disrespect? What about sneering at people, or ignoring them, or prejudicially depriving them of some benefit?
Respect is purely negative (of not exalting oneself over others), and is thus a duty of Right [Kant]
     Full Idea: A duty of free respect towards others is only a negative one (of not exalting oneself above others) and is thus analogous to the duty of Right not to encroach upon what belongs to anyone.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 449 I.II)
     A reaction: Not good enough. He seems to think belongings are the main issue. By referring to one's own modesty, he has no way to indicate equality of respect (among races, ages, genders, religions, animals etc). Being humble does not entail being respectful.
Love urges us to get closer to people, but respect to keep our distance [Kant]
     Full Idea: The principle of mutual love admonishes men constantly to come closer to one another; that of the respect they owe one another, to keep themselves at a distance from one another.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 449 I.II)
     A reaction: It might be a situation where it is right to invoke the Golden Rule. Do we want others to be close to us all the time? Probably not. Respect wins, and love loses! Kant's makes a nice distinction. Respect is a virtue, and love is not.
We must respect the humanity even in a vicious criminal [Kant]
     Full Idea: I cannot deny all respect to even a vicious man as a man; I cannot withdraw at least the respect that belongs to him in his quality as a man, even though by his deeds he makes himself unworthy of it.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 463 I.II)
     A reaction: The obvious way to find some respect for a vicious criminal is to ask how they got that way. Their state is almost certainly self-destructive, and not what they would ever have wished for. Would they choose eternal recurrence?
24. Political Theory / A. Basis of a State / 1. A People / a. Human distinctiveness
Humans are distinguished from animals by their capacity to set themselves any sort of end [Kant]
     Full Idea: The capacity to set oneself an end - any end whatsoever - is what characterises humanity (as distinguished from animality).
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 392 Intro VIII)
     A reaction: This appears to exclude animals which hunt, or build nests - but we have now hugely closed the gap between humans and other animals. I like this, because it chimes in with Sandel's Idea 21045.
Man is both social, and unsociable [Kant]
     Full Idea: Man is a being meant for society (though he is also an unsociable one).
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 471 I.II)
     A reaction: A striking contrast with Aristotle in Idea 5133. It is the difference between the communitarian and the liberal views of society. The latter values privacy and good fences.
25. Social Practice / D. Justice / 3. Punishment / b. Retribution for crime
Violation of rights deserves punishment, which is vengeance, rather than restitution [Kant]
     Full Idea: Every deed that violates a man's right deserves punishment, the function of which is to avenge a crime on the one who committed it (not merely to make good the harm done). ...but no punishment may be inflicted out of hatred.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 460-1 I.II)
     A reaction: A fairly hideous idea, confirming the image of Kant as someone who coldly perfoms ruthless duties. I don't think Kant ever offers any clarity for the concepts of 'deserving' or of 'avenging'. What is the appropriate vengeance for theft?
25. Social Practice / F. Life Issues / 6. Animal Rights
Men can only have duties to those who qualify as persons [Kant]
     Full Idea: Man has duties only to men, ...since his duty to any other subject is moral constraint by that's subject's will. Hence the constraining (binding) subject must first be a person. Man can therefore have no duty to any beings other than men.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 442 I.I)
     A reaction: This is good for illuminating why I am not a Kantian. It is not just that animals are ruled out - it is that whether you show respect depends on whether the recipient passes some test or other. Humans with brain damage may fail the test.
Cruelty to animals is bad because it dulls our empathy for pain in humans [Kant]
     Full Idea: Cruel treatment of animals is intimately opposed to man's duty to himself; ...for it dulls his shared feeling of their pain and so weakens and gradually uproots a natural predisposition that is very serviceable to morality in relations with other men.
     From: Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 443 I.I)
     A reaction: This idea is quite shocking. Kant's rough contemporary Bentham was far more enlightened. If we could be certain that our feelings of empathy for pain were not dulled by cruelty to animals, then it would be fine.