5 ideas
18465 | An 'equivalence' relation is one which is reflexive, symmetric and transitive [Kunen] |
2596 | Maybe mind and body are parallel, like two good clocks [Leibniz] |
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] |
2595 | If the universe is a perfect agreement of uncommunicating substances, there must be a common source [Leibniz] |