5 ideas
| 594 | Speusippus suggested underlying principles for every substance, and ended with a huge list [Speussipus, by Aristotle] |
| 16627 | If you remove the accidents from a horse and a lion, the intellect can't tell them apart [Francis of Marchia] |
| 4051 | People will volunteer for euthanasia because they think other people want them dead [Kamisar] |
| 4050 | We only allow voluntary euthanasia to someone who is both sane and crazed by pain [Kamisar] |
| 2632 | Speusippus said things were governed by some animal force rather than the gods [Speussipus, by Cicero] |