14 ideas
| 2661 | Dialectic is speech cast in the form of logical argument [Cicero] |
| 15527 | Defining terms either enables elimination, or shows that they don't require elimination [Lewis] |
| 2673 | There cannot be more than one truth [Cicero] |
| 2669 | Dialectic assumes that all statements are either true or false, but self-referential paradoxes are a big problem [Cicero] |
| 15530 | A logically determinate name names the same thing in every possible world [Lewis] |
| 2664 | If we have complete healthy senses, what more could the gods give us? [Cicero] |
| 2665 | How can there be a memory of what is false? [Cicero] |
| 20800 | Every true presentation can have a false one of the same quality [Cicero] |
| 15528 | A Ramsey sentence just asserts that a theory can be realised, without saying by what [Lewis] |
| 15526 | There is a method for defining new scientific terms just using the terms we already understand [Lewis] |
| 15529 | It is better to have one realisation of a theory than many - but it may not always be possible [Lewis] |
| 15531 | The Ramsey sentence of a theory says that it has at least one realisation [Lewis] |
| 22307 | Propositions don't name facts, because two opposed propositions can match one fact [Russell] |
| 2672 | Virtues must be very detached, to avoid being motivated by pleasure [Cicero] |