4 ideas
13127 | Categories can't overlap; they are either disjoint, or inclusive [Sommers, by Westerhoff] |
7803 | Modal logic began with translation difficulties for 'If...then' [Lewis,CI, by Girle] |
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] |