12268 | Contradiction is impossible [Antisthenes (I), by Aristotle] |
23917 | Contrary statements can both be reasonable, if they are meant in two different ways [Aristotle] |
6561 | A thing cannot be both in and not-in the same thing (at a given time) [Aristotle] |
11281 | We cannot say that one thing both is and is not a man [Aristotle] |
1601 | The most certain basic principle is that contradictories can't be true at the same time [Aristotle] |
1602 | For Aristotle predication is regulated by Non-Contradiction, because underlying stability is essential [Roochnik on Aristotle] |
11282 | Aristotle does not take the principle of non-contradiction for granted [Aristotle, by Politis] |
9108 | From an impossibility anything follows [William of Ockham] |
15616 | If truth is just non-contradiction, we must take care that our basic concepts aren't contradictory [Hegel] |
21983 | Being and nothing are the same and not the same, which is the identity of identity and non-identity [Hegel] |
21985 | The so-called world is filled with contradiction [Hegel] |
14787 | Self-contradiction doesn't reveal impossibility; it is inductive impossibility which reveals self-contradiction [Peirce] |
4531 | Our inability to both affirm and deny a single thing is merely an inability, not a 'necessity' [Nietzsche] |
22642 | Man has an intense natural interest in the consistency of his own thinking [James] |
17632 | Non-contradiction was learned from instances, and then found to be indubitable [Russell] |
6566 | The problem is to explain the role of contradiction in social life [Wittgenstein] |
9023 | If you say that a contradiction is true, you change the meaning of 'not', and so change the subject [Quine] |
6564 | To affirm 'p and not-p' is to have mislearned 'and' or 'not' [Quine] |
9123 | Someone standing in a doorway seems to be both in and not-in the room [Priest,G, by Sorensen] |
4633 | You cannot rationally deny the principle of non-contradiction, because all reasoning requires it [Baggini /Fosl] |
6565 | The law of noncontradiction makes the distinction between asserting something and denying it [Fogelin] |
19656 | Non-contradiction is unjustified, so it only reveals a fact about thinking, not about reality? [Meillassoux] |