3 ideas
18948 | There is an object for every set of properties (some of which exist, and others don't) [Parsons,T, by Sawyer] |
14367 | An explanation is a causal graph [Woodward,J, by Strevens] |
1513 | The Egyptians were the first to say the soul is immortal and reincarnated [Herodotus] |