47 ideas
| 21422 | 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. |
| 21408 | 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? |
| 4465 | Note that "is" can assert existence, or predication, or identity, or classification [PG] |
| Full Idea: There are four uses of the word "is" in English: as existence ('he is at home'), as predication ('he is tall'), as identity ('he is the man I saw'), and as classification ('he is British'). | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: This seems a nice instance of the sort of point made by analytical philosophy, which can lead to horrible confusion in other breeds of philosophy when it is overlooked. |
| 21416 | 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. |
| 4686 | Fallacies are errors in reasoning, 'formal' if a clear rule is breached, and 'informal' if more general [PG] |
| Full Idea: Fallacies are errors in reasoning, labelled as 'formal' if a clear rule has been breached, and 'informal' if some less precise error has been made. | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: Presumably there can be a grey area between the two. |
| 7415 | Question-begging assumes the proposition which is being challenged [PG] |
| Full Idea: To beg the question is to take for granted in your argument that very proposition which is being challenged | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: An undoubted fallacy, and a simple failure to engage in the rational enterprise. I suppose one might give a reason for something, under the mistaken apprehension that it didn't beg the question; analysis of logical form is then needed. |
| 7414 | What is true of a set is also true of its members [PG] |
| Full Idea: The fallacy of division is the claim that what is true of a set must therefore be true of its members. | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: Clearly a fallacy, but if you only accept sets which are rational, then there is always a reason why a particular is a member of a set, and you can infer facts about particulars from the nature of the set |
| 6696 | The Ad Hominem Fallacy criticises the speaker rather than the argument [PG] |
| Full Idea: The Ad Hominem Fallacy is to criticise the person proposing an argument rather than the argument itself, as when you say "You would say that", or "Your behaviour contradicts what you just said". | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: Nietzsche is very keen on ad hominem arguments, and cheerfully insults great philosophers, but then he doesn't believe there is such a thing as 'pure argument', and he is a relativist. |
| 4687 | Minimal theories of truth avoid ontological commitment to such things as 'facts' or 'reality' [PG] |
| Full Idea: Minimalist theories of truth are those which involve minimum ontological commitment, avoiding references to 'reality' or 'facts' or 'what works', preferring to refer to formal relationships within language. | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: Personally I am suspicious of minimal theories, which seem to be designed by and for anti-realists. They seem too focused on language, when animals can obviously formulate correct propositions. I'm quite happy with the 'facts', even if that is vague. |
| 6516 | Monty Hall Dilemma: do you abandon your preference after Monty eliminates one of the rivals? [PG] |
| Full Idea: The Monty Hall Dilemma: Three boxes, one with a big prize; pick one to open. Monty Hall then opens one of the other two, which is empty. You may, if you wish, switch from your box to the other unopened box. Should you? | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: The other two boxes, as a pair, are more likely contain the prize than your box. Monty Hall has eliminated one of them for you, so you should choose the other one. Your intuition that the two remaining boxes are equal is incorrect! |
| 21410 | 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. |
| 24054 | Everything has a probability, something will happen, and probabilities add up [PG] |
| Full Idea: The three Kolgorov axioms of probability: the probability of an event is a non-negative real number; it is certain that one of the 'elementary events' will occur; and the unity of probabilities is the sum of probability of parts ('additivity'). | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: [My attempt to verbalise them; they are normally expressed in terms of set theory]. Got this from a talk handout, and Wikipedia. |
| 3875 | If reality is just what we perceive, we would have no need for a sixth sense [PG] |
| Full Idea: Reality must be more than merely what we perceive, because a sixth sense would enhance our current knowledge, and a seventh, and so on. | |
| From: PG (Db (ideas) [2031]) |
| 3876 | If my team is losing 3-1, I have synthetic a priori knowledge that they need two goals for a draw [PG] |
| Full Idea: If my football team is losing 3-1, I seem to have synthetic a priori knowledge that they need two goals to achieve a draw | |
| From: PG (Db (ideas) [2031]) |
| 21421 | 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. |
| 7734 | Maybe a mollusc's brain events for pain ARE of the same type (broadly) as a human's [PG] |
| Full Idea: To defend type-type identity against the multiple realisability objection, we might say that a molluscs's brain events that register pain ARE of the same type as humans, given that being 'of the same type' is a fairly flexible concept. | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: But this reduces 'of the same type' to such vagueness that it may become vacuous. You would be left with token-token identity, where the mental event is just identical to some brain event, with its 'type' being irrelevant. |
| 7735 | Maybe a frog's brain events for fear are functionally like ours, but not phenomenally [PG] |
| Full Idea: To defend type-type identity against the multiple realisability objection, we might (also) say that while a frog's brain events for fear are functionally identical to a human's (it runs away), that doesn't mean they are phenomenally identical. | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: I take this to be the key reply to the multiple realisability problem. If a frog flees from a loud noise, it is 'frightened' in a functional sense, but that still leaves the question 'What's it like to be a frightened frog?', which may differ from humans. |
| 21415 | 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. |
| 21409 | 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) |
| 21431 | 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. |
| 21437 | 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. |
| 21429 | 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? |
| 21411 | 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. |
| 21413 | 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? |
| 21414 | 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! |
| 21436 | 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). |
| 21419 | 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. |
| 21417 | 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. |
| 21420 | 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. |
| 21418 | 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. |
| 21425 | 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. |
| 21427 | 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. |
| 21430 | 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? |
| 21428 | 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. |
| 21426 | 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. |
| 21434 | 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? |
| 3877 | Utilitarianism seems to justify the discreet murder of unhappy people [PG] |
| Full Idea: If I discreetly murdered a gloomy and solitary tramp who was upsetting people in my village, if is hard to see how utilitarianism could demonstrate that I had done something wrong. | |
| From: PG (Db (ideas) [2031]) |
| 21412 | 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. |
| 21435 | 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. |
| 21433 | 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? |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| Full Idea: In a single day there lies open to men of learning more than there ever does to the unenlightened in the longest of lifetimes. | |
| From: Posidonius (fragments/reports [c.95 BCE]), quoted by Seneca the Younger - Letters from a Stoic 078 | |
| A reaction: These remarks endorsing the infinite superiority of the educated to the uneducated seem to have been popular in late antiquity. It tends to be the religions which discourage great learning, especially in their emphasis on a single book. |
| 21423 | 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. |
| 21424 | 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. |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |
| Full Idea: Posidonius defined time thus: it is an interval of motion, or the measure of speed and slowness. | |
| From: report of Posidonius (fragments/reports [c.95 BCE]) by John Stobaeus - Anthology 1.08.42 | |
| A reaction: Hm. Can we define motion or speed without alluding to time? Looks like we have to define them as a conjoined pair, which means we cannot fully understand either of them. |
| 6126 | Life is Movement, Respiration, Sensation, Nutrition, Excretion, Reproduction, Growth (MRS NERG) [PG] |
| Full Idea: The biologists' acronym for the necessary conditions of life is MRS NERG: that is, Movement, Respiration, Sensation, Nutrition, Excretion, Reproduction, Growth. | |
| From: PG (Db (ideas) [2031]) | |
| A reaction: How strictly necessary are each of these is a point for discussion. A notorious problem case is fire, which (at a stretch) may pass all seven tests. |
| 3873 | An omniscient being couldn't know it was omniscient, as that requires information from beyond its scope of knowledge [PG] |
| Full Idea: God seems to be in the paradoxical situation that He may be omniscient, but can never know that He is, because that involves knowing that there is nothing outside his scope of knowledge (e.g. another God) | |
| From: PG (Db (ideas) [2031]) |
| 3874 | How could God know there wasn't an unknown force controlling his 'free' will? [PG] |
| Full Idea: How could God be certain that he has free will (if He has), if He couldn't be sure that there wasn't an unknown force controlling his will? | |
| From: PG (Db (ideas) [2031]) |