4 ideas
13083 | The essence is the necessary properties, and the concept includes what is contingent [Leibniz] |
19000 | Read 'all ravens are black' as about ravens, not as about an implication [Belnap] |
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] |