29 ideas
| 1922 | Spiritual qualities only become advantageous with the growth of wisdom [Plato] |
| 22438 | Philosophy is largely concerned with finding the minimum that science could get by with [Quine] |
| 22436 | Logicians don't paraphrase logic into language, because they think in the symbolic language [Quine] |
| 8378 | Philosophers usually learn science from each other, not from science [Russell] |
| 22431 | Good algorithms and theories need many occurrences of just a few elements [Quine] |
| 22435 | The logician's '→' does not mean the English if-then [Quine] |
| 22433 | It is important that the quantification over temporal entities is timeless [Quine] |
| 22437 | Logical languages are rooted in ordinary language, and that connection must be kept [Quine] |
| 22434 | Reduction to logical forms first simplifies idioms and grammar, then finds a single reading of it [Quine] |
| 11259 | How can you seek knowledge of something if you don't know it? [Plato] |
| 8375 | 'Necessary' is a predicate of a propositional function, saying it is true for all values of its argument [Russell] |
| 22432 | Normally conditionals have no truth value; it is the consequent which has a conditional truth value [Quine] |
| 20219 | True opinions only become really valuable when they are tied down by reasons [Plato] |
| 5985 | Seeking and learning are just recollection [Plato] |
| 5986 | The slave boy learns geometry from questioning, not teaching, so it is recollection [Plato] |
| 1923 | As a guide to action, true opinion is as good as knowledge [Plato] |
| 1919 | You don't need to learn what you know, and how do you seek for what you don't know? [Plato] |
| 22430 | If we understand a statement, we know the circumstances of its truth [Quine] |
| 1913 | Is virtue taught, or achieved by practice, or a natural aptitude, or what? [Plato] |
| 1921 | If virtue is a type of knowledge then it ought to be taught [Plato] |
| 1927 | It seems that virtue is neither natural nor taught, but is a divine gift [Plato] |
| 1918 | How can you know part of virtue without knowing the whole? [Plato] |
| 1916 | Even if virtues are many and various, they must have something in common to make them virtues [Plato] |
| 4396 | The law of causality is a source of confusion, and should be dropped from philosophy [Russell] |
| 8376 | If causes are contiguous with events, only the last bit is relevant, or the event's timing is baffling [Russell] |
| 8380 | Striking a match causes its igniting, even if it sometimes doesn't work [Russell] |
| 8379 | In causal laws, 'events' must recur, so they have to be universals, not particulars [Russell] |
| 8381 | The constancy of scientific laws rests on differential equations, not on cause and effect [Russell] |
| 13713 | Quine holds time to be 'space-like': past objects are as real as spatially remote ones [Quine, by Sider] |