9 ideas
| 13768 | Validity can preserve certainty in mathematics, but conditionals about contingents are another matter [Edgington] |
| 13770 | There are many different conditional mental states, and different conditional speech acts [Edgington] |
| 13764 | Are conditionals truth-functional - do the truth values of A and B determine the truth value of 'If A, B'? [Edgington] |
| 13765 | 'If A,B' must entail ¬(A & ¬B); otherwise we could have A true, B false, and If A,B true, invalidating modus ponens [Edgington] |
| 299 | What is fine is always difficult [Plato] |
| 297 | What is fine is the parent of goodness [Plato] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 298 | While sex is very pleasant, it should be in secret, as it looks contemptible [Plato] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |