display all the ideas for this combination of texts
14 ideas
| 583 | The starting point of a proof is not a proof [Aristotle] |
| Full Idea: Who defines the healthy man, or who is awake or asleep? This is a pursuit of foundations, but this is seeking an account where there isn't one. The starting point of a proof is not a proof. | |
| From: Aristotle (Metaphysics [c.324 BCE], 1011a10) | |
| A reaction: a comment on Descartes |
| 1545 | Protagoras was the first to claim that there are two contradictory arguments about everything [Protagoras, by Diog. Laertius] |
| Full Idea: Protagoras was the first to claim that there are two contradictory arguments about everything. | |
| From: report of Protagoras (fragments/reports [c.441 BCE], A01) by Diogenes Laertius - Lives of Eminent Philosophers 09.51 |
| 578 | Cratylus decided speech was hopeless, and his only expression was the movement of a finger [Cratylus, by Aristotle] |
| Full Idea: Cratylus thought speech of any kind was radically inappropriate and that expression should be restricted exclusively to the movement of the finger. | |
| From: report of Cratylus (fragments/reports [c.425 BCE]) by Aristotle - Metaphysics 1010a |
| 581 | Dreams aren't a serious problem. No one starts walking round Athens next morning, having dreamt that they were there! [Aristotle] |
| Full Idea: Is it really an issue whether things are true that appear to those asleep or to those awake? No one in Libya who dreamt he was in Athens, would set out for the Odeon next morning! | |
| From: Aristotle (Metaphysics [c.324 BCE], 1010b09) |
| 1547 | Man is the measure of all things - of things that are, and of things that are not [Protagoras] |
| Full Idea: He began one of his books as follows: 'Man is the measure of all things - of the things that are, that they are, and of the things that are not, that they are not'. | |
| From: Protagoras (fragments/reports [c.441 BCE], B01), quoted by Diogenes Laertius - Lives of Eminent Philosophers 09.51 |
| 3305 | There is no more purely metaphysical doctrine than Protagorean relativism [Benardete,JA on Protagoras] |
| Full Idea: No purer metaphysical doctrine can possibly be found than the Protagorean thesis that to be (anything at all) is to be relative ( to something or other). | |
| From: comment on Protagoras (fragments/reports [c.441 BCE]) by José A. Benardete - Metaphysics: the logical approach Ch.3 |
| 3313 | If my hot wind is your cold wind, then wind is neither hot nor cold, and so not as cold as itself [Benardete,JA on Protagoras] |
| Full Idea: Because the wind is cold to me but not you, Protagoras takes it to in itself neither cold nor not-cold. Accordingly, I very much doubt that he can allow the wind to be exactly as cold as itself. | |
| From: comment on Protagoras (fragments/reports [c.441 BCE]) by José A. Benardete - Metaphysics: the logical approach Ch.8 |
| 3317 | You can only state the problem of the relative warmth of an object by agreeing on the underlying object [Benardete,JA on Protagoras] |
| Full Idea: Only if the thing that is cold to me is precisely identical with the thing that is not cold to you can Protagoras launch his argument, but then it is seen to be the thing in itself that exists absolutely speaking. | |
| From: comment on Protagoras (fragments/reports [c.441 BCE]) by José A. Benardete - Metaphysics: the logical approach Ch.8 |
| 585 | If relativism is individual, how can something look sweet and not taste it, or look different to our two eyes? [Aristotle] |
| Full Idea: If things are true relative to an individual, how can something seem honey to the sight but not to the taste, or, given that we have two eyes, things may not seem the same to the sight of both of them. | |
| From: Aristotle (Metaphysics [c.324 BCE], 1011a24) |
| 584 | If truth is relative it is relational, and concerns appearances relative to a situation [Aristotle] |
| Full Idea: The claim that all appearances are true makes all things relational. Hence the claim is shifted to all appearances being true relative to a subject, time, sense and context. | |
| From: Aristotle (Metaphysics [c.324 BCE], 1011a20) | |
| A reaction: applies to Epicurus |
| 606 | Protagoras absurdly thought that the knowing or perceiving man is 'the measure of all things' [Aristotle on Protagoras] |
| Full Idea: When Protagoras quipped that man is the measure of all things, he had in mind, of course, the knowing or perceiving man. The grounds are that they have perception/knowledge, and these are said to be the measures of objects. Utter nonsense! | |
| From: comment on Protagoras (fragments/reports [c.441 BCE]) by Aristotle - Metaphysics 1053b |
| 612 | Relativists think if you poke your eye and see double, there must be two things [Aristotle on Protagoras] |
| Full Idea: In fact there is no difference between Protagoreanism and saying this: if you stick your finger under your eyes and make single things seem two, then they are two, just because they seem to be two. | |
| From: comment on Protagoras (fragments/reports [c.441 BCE]) by Aristotle - Metaphysics 1063a06 |
| 247 | God is "the measure of all things", more than any man [Plato on Protagoras] |
| Full Idea: In our view it is God who is pre-eminently the "measure of all things", much more so than any "man", as they say. | |
| From: comment on Protagoras (fragments/reports [c.441 BCE]) by Plato - The Laws 716c |
| 576 | If the majority had diseased taste, and only a few were healthy, relativists would have to prefer the former [Aristotle] |
| Full Idea: When two men taste the same thing one will often find it sweet and the other bitter. Suppose all men were sick, except one or two who were healthy. It would then be the latter two who would be considered sick, and the others not! | |
| From: Aristotle (Metaphysics [c.324 BCE], 1009b05) |