48 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? |
| 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. |
| 15557 | Verisimilitude has proved hard to analyse, and seems to have several components [Lewis] |
| Full Idea: The analysis of verisimilitude has been much debated. Some plausible analyses have failed disastrously, others conflict with one another. One conclusion is that verisimilitude seems to consist of several distinguishable virtues. | |
| From: David Lewis (Causal Explanation [1986], V n7) | |
| A reaction: Presumably if it is complex, you can approach truth in one respect while receding from it in another. It seems clear enough if you are calculating pi by some iterative process. |
| 15375 | If terms change their designations in different states, they are functions from states to objects [Fitting] |
| Full Idea: The common feature of every designating term is that designation may change from state to state - thus it can be formalized by a function from states to objects. | |
| From: Melvin Fitting (Intensional Logic [2007], 3) | |
| A reaction: Specifying the objects sounds OK, but specifying states sounds rather tough. |
| 15376 | Intensional logic adds a second type of quantification, over intensional objects, or individual concepts [Fitting] |
| Full Idea: To first order modal logic (with quantification over objects) we can add a second kind of quantification, over intensions. An intensional object, or individual concept, will be modelled by a function from states to objects. | |
| From: Melvin Fitting (Intensional Logic [2007], 3.3) |
| 15378 | Awareness logic adds the restriction of an awareness function to epistemic logic [Fitting] |
| Full Idea: Awareness logic enriched Hintikka's epistemic models with an awareness function, mapping each state to the set of formulas we are aware of at that state. This reflects some bound on the resources we can bring to bear. | |
| From: Melvin Fitting (Intensional Logic [2007], 3.6.1) | |
| A reaction: [He cites Fagin and Halpern 1988 for this] |
| 15379 | Justication logics make explicit the reasons for mathematical truth in proofs [Fitting] |
| Full Idea: In justification logics, the logics of knowledge are extended by making reasons explicit. A logic of proof terms was created, with a semantics. In this, mathematical truths are known for explicit reasons, and these provide a measure of complexity. | |
| From: Melvin Fitting (Intensional Logic [2007], 3.6.1) |
| 11026 | Classical logic is deliberately extensional, in order to model mathematics [Fitting] |
| Full Idea: Mathematics is typically extensional throughout (we write 3+2=2+3 despite the two terms having different meanings). ..Classical first-order logic is extensional by design since it primarily evolved to model the reasoning of mathematics. | |
| From: Melvin Fitting (Intensional Logic [2007], §1) |
| 11028 | λ-abstraction disambiguates the scope of modal operators [Fitting] |
| Full Idea: λ-abstraction can be used to abstract and disambiguate a predicate. De re is [λx◊P(x)](f) - f has the possible-P property - and de dicto is ◊[λxP(x)](f) - possibly f has the P-property. Also applies to □. | |
| From: Melvin Fitting (Intensional Logic [2007], §3.3) | |
| A reaction: Compare the Barcan formula. Originated with Church in the 1930s, and Carnap 1947, but revived by Stalnaker and Thomason 1968. Because it refers to the predicate, it has a role in intensional versions of logic, especially modal logic. |
| 15554 | A disposition needs a causal basis, a property in a certain causal role. Could the disposition be the property? [Lewis] |
| Full Idea: I take for granted that a disposition requires a causal basis: one has the disposition iff one has a property that occupies a certain causal role. Shall we then identify the disposition with its basis? That makes the disposition cause its manifestations. | |
| From: David Lewis (Causal Explanation [1986], III) | |
| A reaction: Introduce the concept of a 'power' and I see no problem with his proposal. Fundamental dispositions are powerful, and provide the causal basis for complex dispositions. Something had better be powerful. |
| 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. |
| 15560 | We can explain a chance event, but can never show why some other outcome did not occur [Lewis] |
| Full Idea: I think we are right to explain chance events, yet we are right also to deny that we can ever explain why a chance process yields one outcome rather than another. We cannot explain why one event happened rather than the other. | |
| From: David Lewis (Causal Explanation [1986], VI) | |
| A reaction: This misses out an investigation which slowly reveals that a 'chance' event wasn't so chancey after all. Failure to explain confirms chance, so the judgement of chance shouldn't block attempts to explain. |
| 15377 | Definite descriptions pick out different objects in different possible worlds [Fitting] |
| Full Idea: Definite descriptions pick out different objects in different possible worlds quite naturally. | |
| From: Melvin Fitting (Intensional Logic [2007], 3.4) | |
| A reaction: A definite description can pick out the same object in another possible world, or a very similar one, or an object which has almost nothing in common with the others. |
| 15559 | Does a good explanation produce understanding? That claim is just empty [Lewis] |
| Full Idea: It is said that a good explanation ought to produce understanding, ...but this just says that a good explanation produces possession of that which it provide, so this desideratum is empty. It adds nothing to our understanding of explanation. | |
| From: David Lewis (Causal Explanation [1986], V) | |
| A reaction: I am not convinced by this dismissal. If you are looking for a test of whether an explanation is good, the announcement that the participants feel they have achieved a good understanding sounds like success. |
| 15556 | Science may well pursue generalised explanation, rather than laws [Lewis] |
| Full Idea: The pursuit of general explanations may be very much more widespread in science than the pursuit of general laws. | |
| From: David Lewis (Causal Explanation [1986], IV) | |
| A reaction: Nice. I increasingly think that the main target of all enquiry is ever-widening generality, with no need to aspire to universality. |
| 15558 | A good explanation is supposed to show that the event had to happen [Lewis] |
| Full Idea: It is said that a good explanation ought to show that the explanandum event had to happen, given the laws and circumstances. | |
| From: David Lewis (Causal Explanation [1986], V) | |
| A reaction: I cautiously go along with this view. Given that there are necessities in nature (a long story), we should aim to reveal them. There is no higher aspiration open to us than successful explanation. Lewis says good explanations can reveal falsehoods. |
| 4809 | Lewis endorses the thesis that all explanation of singular events is causal explanation [Lewis, by Psillos] |
| Full Idea: Lewis endorses the thesis that all explanation of singular events is causal explanation. | |
| From: report of David Lewis (Causal Explanation [1986]) by Stathis Psillos - Causation and Explanation p.237 | |
| A reaction: It is hard to challenge this. The assumption is that only nomological and causal explanations are possible, and the former are unobtainable for singular events. |
| 14321 | To explain an event is to provide some information about its causal history [Lewis] |
| Full Idea: Here is my main thesis: to explain an event is to provide some information about its causal history. | |
| From: David Lewis (Causal Explanation [1986], II) | |
| A reaction: The obvious thought is that you might provide some tiny and barely relevant part of that causal history, such as a bird perched on the Titanic's iceberg. So how do we distinguish the 'important' causal information? |
| 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. |
| 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) | |
| A reaction: If all emotions were erased from my morality, I might still retain some principles (in a Kantian way), but my values would be entirely different. |
| 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. |
| 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. |
| 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? |
| 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? |
| 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? |
| 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. |
| 15555 | Explaining match lighting in general is like explaining one lighting of a match [Lewis] |
| Full Idea: Explaining why struck matches light in general is not so very different from explaining why some particular struck match lit. ...We may generalize modestly, without laying claim to universality. | |
| From: David Lewis (Causal Explanation [1986], IV) | |
| A reaction: A suggestive remark, since particular causation and general causation seem far apart, but Lewis suggests that the needs of explanation bring them together. Lawlike and unlawlike explanations? |
| 15551 | Ways of carving causes may be natural, but never 'right' [Lewis] |
| Full Idea: There is no one right way - though there may be more or less natural ways - of carving up a causal history. | |
| From: David Lewis (Causal Explanation [1986], I) | |
| A reaction: This invites a distinction between the 'natural' causes and the 'real' causes. Presumably if any causes were 'real', they would have a better claim to be 'right'. Is an earthquake the 'real' (correct?) cause of a tsunami? |
| 15552 | We only pick 'the' cause for the purposes of some particular enquiry. [Lewis] |
| Full Idea: Disagreement about 'the' cause is only disagreement about which part of the causal history is most salient for the purposes of some particular inquiry. | |
| From: David Lewis (Causal Explanation [1986], I) | |
| A reaction: I don't believe this. In the majority of cases I see the cause of an event, without having any interest in any particular enquiry. It is just so obvious that there isn't even a disagreement. Maybe there is only one sensible enquiry. |
| 15553 | Causal dependence is counterfactual dependence between events [Lewis] |
| Full Idea: I take causal dependence to be counterfactual dependence, of a suitably back-tracking sort, between distinct events. | |
| From: David Lewis (Causal Explanation [1986], I) | |
| A reaction: He quotes Hume in support. 'Counterfactual dependence' strikes me as too vague, or merely descriptive, for the job of explanation. 'If...then' is a logical relationship; what is it in nature that justifies the dependency? |