5 ideas
9390 | Logic guides thinking, but it isn't a substitute for it [Rumfitt] |
9226 | If mathematical theories conflict, it may just be that they have different subject matter [Field,H] |
9389 | Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt] |
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] |