6 ideas
| 17750 | The first clear proof of the consistency of the first order predicate logic was in 1928 [Hilbert/Ackermann, by Walicki] |
| 16669 | Everything that exists is either a being, or some mode of a being [Malebranche] |
| 5987 | Alcmaeon was the first to say the brain is central to thinking [Alcmaeon, by Staden, von] |
| 12726 | In a true cause we see a necessary connection [Malebranche] |
| 2594 | A true cause must involve a necessary connection between cause and effect [Malebranche] |
| 24043 | Soul must be immortal, since it continually moves, like the heavens [Alcmaeon, by Aristotle] |