37 ideas
125 | Is a gifted philosopher unmanly if he avoids the strife of the communal world? [Plato] |
Full Idea: Callicles: Even a naturally gifted philosopher isn't going to develop into a real man, because he's avoiding the heart of his community and the thick of the agora. | |
From: Plato (Gorgias [c.387 BCE], 485d) | |
A reaction: A serious charge against philosophy. An attraction of the subject is its purity, its necessity, its timelessness, and in some ways these are just nicer and easier and more understandable than the hard mess of real life. But understanding has to be good. |
1654 | In "Gorgias" Socrates is confident that his 'elenchus' will decide moral truth [Vlastos on Plato] |
Full Idea: In the 'Gorgias' Socrates is still supremely confident that the elenchus is the final arbiter of moral truth. | |
From: comment on Plato (Gorgias [c.387 BCE]) by Gregory Vlastos - Socrates: Ironist and Moral Philosopher p.117 |
4321 | We should test one another, by asking and answering questions [Plato] |
Full Idea: Test me, and let yourself be tested as well, by asking and answering questions. | |
From: Plato (Gorgias [c.387 BCE], 462a) | |
A reaction: The idea must be to avoid wild speculation, by continually filtering ideas through rival critical intelligences. The best philosophical method ever devised. |
10633 | 'Some critics admire only one another' cannot be paraphrased in singular first-order [Linnebo] |
Full Idea: The Geach-Kaplan sentence 'Some critics admire only one another' provably has no singular first-order paraphrase using only its predicates. | |
From: Øystein Linnebo (Plural Quantification [2008], 1) | |
A reaction: There seems to be a choice of either going second-order (picking out a property), or going plural (collectively quantifying), or maybe both. |
10638 | A pure logic is wholly general, purely formal, and directly known [Linnebo] |
Full Idea: The defining features of a pure logic are its absolute generality (the objects of discourse are irrelevant), and its formality (logical truths depend on form, not matter), and its cognitive primacy (no extra-logical understanding is needed to grasp it). | |
From: Øystein Linnebo (Plural Quantification [2008], 3) | |
A reaction: [compressed] This strikes me as very important. The above description seems to contain no ontological commitment at all, either to the existence of something, or to two things, or to numbers, or to a property. Pure logic seems to be 'if-thenism'. |
10640 | Instead of complex objects like tables, plurally quantify over mereological atoms tablewise [Linnebo] |
Full Idea: Plural quantification can be used to eliminate the commitment of science and common sense to complex objects. We can use plural quantification over mereological atoms arranged tablewise or chairwise. | |
From: Øystein Linnebo (Plural Quantification [2008], 4.5) | |
A reaction: [He cites Hossack and van Ingwagen] |
10641 | Traditionally we eliminate plurals by quantifying over sets [Linnebo] |
Full Idea: The traditional view in analytic philosophy has been that all plural locutions should be paraphrased away by quantifying over sets, though Boolos and other objected that this is unnatural and unnecessary. | |
From: Øystein Linnebo (Plural Quantification [2008], 5) |
10635 | Second-order quantification and plural quantification are different [Linnebo] |
Full Idea: Second-order quantification and plural quantification are generally regarded as different forms of quantification. | |
From: Øystein Linnebo (Plural Quantification [2008], 2) |
10636 | Plural plurals are unnatural and need a first-level ontology [Linnebo] |
Full Idea: Higher-order plural quantification (plural plurals) is often rejected because plural quantification is supposedly ontological innocent, with no plural things to be plural, and because it is not found in ordinary English. | |
From: Øystein Linnebo (Plural Quantification [2008], 2.4) | |
A reaction: [Summary; he cites Boolos as a notable rejector] Linnebo observes that Icelandic contains a word 'tvennir' which means 'two pairs of'. |
10639 | Plural quantification may allow a monadic second-order theory with first-order ontology [Linnebo] |
Full Idea: Plural quantification seems to offer ontological economy. We can pay the price of a mere first-order theory and then use plural quantification to get for free the corresponding monadic second-order theory, which would be an ontological bargain. | |
From: Øystein Linnebo (Plural Quantification [2008], 4.4) | |
A reaction: [He mentions Hellman's modal structuralism in mathematics] |
10643 | We speak of a theory's 'ideological commitments' as well as its 'ontological commitments' [Linnebo] |
Full Idea: Some philosophers speak about a theory's 'ideological commitments' and not just about its 'ontological commitments'. | |
From: Øystein Linnebo (Plural Quantification [2008], 5.4) | |
A reaction: This is a third strategy for possibly evading one's ontological duty, along with fiddling with the words 'exist' or 'object'. An ideological commitment to something to which one is not actually ontologically committed conjures up stupidity and dogma. |
10637 | Ordinary speakers posit objects without concern for ontology [Linnebo] |
Full Idea: Maybe ordinary speakers aren't very concerned about their ontological commitments, and sometimes find it convenient to posit objects. | |
From: Øystein Linnebo (Plural Quantification [2008], 2.4) | |
A reaction: I think this is the whole truth about the ontological commitment of ordinary language. We bring abstraction under control by pretending it is a world of physical objects. The 'left wing' in politics, 'dark deeds', a 'huge difference'. |
10634 | Predicates are 'distributive' or 'non-distributive'; do individuals do what the group does? [Linnebo] |
Full Idea: The predicate 'is on the table' is 'distributive', since some things are on the table if each one is, whereas the predicate 'form a circle' is 'non-distributive', since it is not analytic that when some things form a circle, each one forms a circle. | |
From: Øystein Linnebo (Plural Quantification [2008], 1.1) | |
A reaction: The first predicate can have singular or plural subjects, but the second requires a plural subject? Hm. 'The rope forms a circle'. The second is example is not true, as well as not analytic. |
114 | Rhetoric can produce conviction, but not educate people about right and wrong [Plato] |
Full Idea: Rhetoric is an agent of the kind of persuasion which is designed to produce conviction, but not to educate people about right and wrong. | |
From: Plato (Gorgias [c.387 BCE], 455a) | |
A reaction: Surely there must be good rhetoric (or at least it is an open question)? |
116 | Rhetoric is irrational about its means and its ends [Plato] |
Full Idea: Rhetoric is a knack, because it lacks rational understanding of its object or what it dispenses (and can't explain the reason anything happens). | |
From: Plato (Gorgias [c.387 BCE], 465a) | |
A reaction: If there are cunning people who have the wrong sort of intelligence for morality, there must be cunning users of rhetoric who know exactly what they are doing. |
135 | All activity aims at the good [Plato] |
Full Idea: All activity aims at the good. | |
From: Plato (Gorgias [c.387 BCE], 499e) | |
A reaction: He includes non-conscious activity, so this is the 'teleological' view of nature, which seems a bit optimistic to the modern mind. |
122 | Moral rules are made by the weak members of humanity [Plato] |
Full Idea: Callicles: It's the weaklings who constitute the majority of the human race who make the rules. | |
From: Plato (Gorgias [c.387 BCE], 483b) | |
A reaction: An aristocrat bemoans democracy. Presumably the qualification for being a 'weakling' is shortage of money. How strong are the scions of the aristocrats? |
139 | A good person is bound to act well, and this brings happiness [Plato] |
Full Idea: A good person is bound to do whatever he does well and successfully, and success brings fulfilment and happiness. | |
From: Plato (Gorgias [c.387 BCE], 507c) | |
A reaction: Not how we would see it, I guess, but this is the Greek idea that a good person is one who functions well. Anyone who functions well is probably having a good time. |
128 | Is it natural to simply indulge our selfish desires? [Plato] |
Full Idea: Callicles: Nature says the only authentic way of life is to do nothing to hinder or restrain the expansion of one's desires. | |
From: Plato (Gorgias [c.387 BCE], 491e) | |
A reaction: Sounds like the natural desires of a young single man. Parents and spouses have natural desires that focus on other people's desires. |
136 | Good should be the aim of pleasant activity, not the other way round [Plato] |
Full Idea: Good should be the goal of pleasant activities, rather than pleasure being the goal of good activities. | |
From: Plato (Gorgias [c.387 BCE], 500a) | |
A reaction: Nice. Not far off what Aristotle says on the topic. So what activities should we seek out? Narrow the pleasures down to the good ones, or narrow the good ones down to the pleasurable? |
4322 | In slaking our thirst the goodness of the action and the pleasure are clearly separate [Plato] |
Full Idea: When we drink to quench thirst, we lose the distress of the thirst and the pleasure of drinking at the same moment, but one loss is good and the other bad, so the pleasure and the goodness must be separate. | |
From: Plato (Gorgias [c.387 BCE], 497d) | |
A reaction: This is open to the objection that the good of slaking one's thirst is a long-term pleasure, where the drinking is short-term, so pleasure is still the good. |
134 | Good and bad people seem to experience equal amounts of pleasure and pain [Plato] |
Full Idea: There is little to tell between good and bad people (e.g. cowards) in terms of how much pleasure and distress they experience. | |
From: Plato (Gorgias [c.387 BCE], 498c) | |
A reaction: A very perceptive remark. If the good are people with empathy for others, then they may suffer more distress than the insensitive wicked. |
4319 | In a fool's mind desire is like a leaky jar, insatiable in its desires, and order and contentment are better [Plato] |
Full Idea: In a fool's mind desire is a leaky jar, …which is an analogy for the mind's insatiability, showing we should prefer an orderly life, in which one is content with whatever is to hand, to a self-indulgent life of insatiable desire. | |
From: Plato (Gorgias [c.387 BCE], 493b) | |
A reaction: This points to an interesting paradox, that pleasure requires the misery of desire. And yet absence of desire is like death. An Aristotelian mean, of living according to nature, seems the escape route. |
132 | If happiness is the satisfaction of desires, then a life of scratching itches should be happiness [Plato] |
Full Idea: Socrates: I want to ask whether a lifetime spent scratching, itching and scratching, no end of scratching, is also a life of happiness. | |
From: Plato (Gorgias [c.387 BCE], 494c) | |
A reaction: There are plenty of people who think 'fun' is the main aim of life, and who fit what Socrates is referring to. We don't admire such a life, but not many people can be admired. |
130 | Is the happiest state one of sensual, self-indulgent freedom? [Plato] |
Full Idea: Callicles: If a person has the means to live a life of sensual, self-indulgent freedom, there's no better or happier state of existence. | |
From: Plato (Gorgias [c.387 BCE], 492c) |
120 | Should we avoid evil because it will bring us bad consequences? [Plato] |
Full Idea: Socrates: We should avoid doing wrong because of all the bad consequences it will bring us. | |
From: Plato (Gorgias [c.387 BCE], 480a) |
118 | I would rather be a victim of crime than a criminal [Plato] |
Full Idea: Socrates: If I had to choose between doing wrong and having wrong done to me, I'd prefer the latter to the former. | |
From: Plato (Gorgias [c.387 BCE], 469c) | |
A reaction: cf Democritus 68B45 |
131 | If absence of desire is happiness, then nothing is happier than a stone or a corpse [Plato] |
Full Idea: Callicles: If people who need nothing are happy, there would be nothing happier than a stone or a corpse. | |
From: Plato (Gorgias [c.387 BCE], 492e) | |
A reaction: We aren't really supposed to approve of Callicles, but to me this is a splendidly crushing western response to many of the ideals found in eastern philosophy. |
140 | Self-indulgent desire makes friendship impossible, because it makes a person incapable of co-operation [Plato] |
Full Idea: Self-indulgent desire makes a person incapable of co-operation, which is a prerequisite of friendship. | |
From: Plato (Gorgias [c.387 BCE], 507e) |
129 | Do most people praise self-discipline and justice because they are too timid to gain their own pleasure? [Plato] |
Full Idea: Callicles: Why do most people praise self-discipline and justice? Because their own timidity makes them incapable of satisfying their pleasures. | |
From: Plato (Gorgias [c.387 BCE], 492a) |
119 | A criminal is worse off if he avoids punishment [Plato] |
Full Idea: Socrates: A criminal is worse off if he doesn't pay the penalty, and continues to do wrong without getting punished. | |
From: Plato (Gorgias [c.387 BCE], 472e) |
4320 | The popular view is that health is first, good looks second, and honest wealth third [Plato] |
Full Idea: I'm sure you know the list of human advantages in the party song: 'The very best is health, Second good looks, and third honest wealth'. | |
From: Plato (Gorgias [c.387 BCE], 451e) | |
A reaction: This invites the obvious question of why anyone wants these three things, with the implied answer of 'pleasure'. But we might want them even if we couldn't use them, implying pluralism. |
137 | As with other things, a good state is organised and orderly [Plato] |
Full Idea: As in every case (an artefact, a body, a mind, a creature), a good state is an organised and orderly state. | |
From: Plato (Gorgias [c.387 BCE], 506e) |
141 | A good citizen won't be passive, but will redirect the needs of the state [Plato] |
Full Idea: The only responsibility of a good member of a community is altering the community's needs rather than going along with them. | |
From: Plato (Gorgias [c.387 BCE], 517b) |
123 | Do most people like equality because they are second-rate? [Plato] |
Full Idea: Callicles: It's because most people are second-rate that they are happy for things to be distributed equally. | |
From: Plato (Gorgias [c.387 BCE], 483c) |
124 | Does nature imply that it is right for better people to have greater benefits? [Plato] |
Full Idea: Callicles: We only have to look at nature to find evidence that it is right for better to have a greater share than worse. | |
From: Plato (Gorgias [c.387 BCE], 483d) |
6005 | Animals are dangerous and nourishing, and can't form contracts of justice [Hermarchus, by Sedley] |
Full Idea: Hermarchus said that animal killing is justified by considerations of human safety and nourishment and by animals' inability to form contractual relations of justice with us. | |
From: report of Hermarchus (fragments/reports [c.270 BCE]) by David A. Sedley - Hermarchus | |
A reaction: Could the last argument be used to justify torturing animals? Or could we eat a human who was too brain-damaged to form contracts? |