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3 ideas
| 12095 | Knowledge of potential is universal and indefinite; of the actual it is definite and of individuals [Aristotle] |
| Full Idea: Knowledge is a double thing, being both potential and actual. It is universal and indefinite and it is the potentiality of something that is universal and indefinite. But actuality is definite and of something definite, being the this-such of a this-such. | |
| From: Aristotle (Metaphysics [c.324 BCE], 1087a12) | |
| A reaction: Charlotte Witt identifies this as a key idea in 'Metaphysics', since the metaphysics is built on the epistemology, and this idea justifies the claim that Aristotle gives priority to particulars. I thoroughly approve. Not all knowledge is of the universal. |
| 11256 | Materialists cannot explain change [Aristotle, by Politis] |
| Full Idea: Aristotle's main objection against the materialists (such as Thales and Anaximenes) is that they cannot explain why things change as they do. | |
| From: report of Aristotle (Metaphysics [c.324 BCE], 0988b23-) by Vassilis Politis - Aristotle and the Metaphysics 2.4 |
| 18205 | The theoretical indispensability of atoms did not at first convince scientists that they were real [Maddy] |
| Full Idea: The case of atoms makes it clear that the indispensable appearance of an entity in our best scientific theory is not generally enough to convince scientists that it is real. | |
| From: Penelope Maddy (Naturalism in Mathematics [1997], II.6) | |
| A reaction: She refers to the period between Dalton and Einstein, when theories were full of atoms, but there was strong reluctance to actually say that they existed, until the direct evidence was incontrovertable. Nice point. |