6 ideas
8000 | He who is ignorant of the history of philosophy is doomed to repeat it [Santayana, by MacIntyre] |
19404 | Necessities rest on contradiction, and contingencies on sufficient reason [Leibniz] |
16901 | The equivalent algebra model of geometry loses some essential spatial meaning [Burge] |
16902 | Peano arithmetic requires grasping 0 as a primitive number [Burge] |
16892 | Is apriority predicated mainly of truths and proofs, or of human cognition? [Burge] |
19403 | Each of the infinite possible worlds has its own laws, and the individuals contain those laws [Leibniz] |