10 ideas
| 6408 | Russell needed three extra axioms to reduce maths to logic: infinity, choice and reducibility [Grayling] |
| 6414 | Two propositions might seem self-evident, but contradict one another [Grayling] |
| 23146 | Motives produce intentions, which lead to actions [Driver] |
| 23147 | Good intentions are not necessary for virtue [Driver] |
| 23144 | Virtue should be defined by consequences, not by states of mind [Driver] |
| 23148 | Virtues are character traits or dispositions which produce good consequences for others [Driver] |
| 23150 | Control of pregnancy and knowledge of paternity have downgraded chastity [Driver] |
| 23149 | If generosity systematically turned recipients into parasites, it wouldn't be a virtue [Driver] |
| 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] |