11 ideas
| 15527 | Defining terms either enables elimination, or shows that they don't require elimination [Lewis] |
| 3644 | Two things being joined together doesn't prove they are the same [Descartes] |
| 15530 | A logically determinate name names the same thing in every possible world [Lewis] |
| 3621 | Only judgement decides which of our senses are reliable [Descartes] |
| 15531 | The Ramsey sentence of a theory says that it has at least one realisation [Lewis] |
| 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] |
| 1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
| 5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |
| 3637 | Ideas in God's mind only have value if he makes it so [Descartes] |