20 ideas
| 3035 | Dialectic involves conversations with short questions and brief answers [Diog. Laertius] |
| 15642 | If kinds depend only on what can be observed, many underlying essences might produce the same kind [Eagle] |
| 15645 | Nominal essence are the observable properties of things [Eagle] |
| 15643 | Nominal essence mistakenly gives equal weight to all underlying properties that produce appearances [Eagle] |
| 1816 | Sceptics say demonstration depends on self-demonstrating things, or indemonstrable things [Diog. Laertius] |
| 1819 | Scepticism has two dogmas: that nothing is definable, and every argument has an opposite argument [Diog. Laertius] |
| 3064 | When sceptics say that nothing is definable, or all arguments have an opposite, they are being dogmatic [Diog. Laertius] |
| 3033 | Induction moves from some truths to similar ones, by contraries or consequents [Diog. Laertius] |
| 21740 | I doubt whether ethics is part of philosophy [Russell] |
| 21741 | 'You ought to do p' primarily has emotional content, expressing approval [Russell] |
| 21746 | Unlike hate, all desires can be satisfied by love [Russell] |
| 21747 | Goodness is a combination of love and knowledge [Russell] |
| 21743 | In wartime, happiness is hating the enemy, because it gives the war a purpose [Russell] |
| 1838 | Cyrenaic pleasure is a motion, but Epicurean pleasure is a condition [Diog. Laertius] |
| 1769 | Cynics believe that when a man wishes for nothing he is like the gods [Diog. Laertius] |
| 21742 | Originally virtue was obedience, to gods, government, or custom [Russell] |
| 21745 | Act so as to produce harmonious rather than discordant desires [Russell] |
| 21744 | Legally curbing people's desires is inferior to improving their desires [Russell] |
| 15641 | Kinds are fixed by the essential properties of things - the properties that make it that kind of thing [Eagle] |
| 22891 | We could be aware of time if senses briefly vibrated, extending their experience of movement [Russell, by Bardon] |