9 ideas
| 9548 | A mathematical object exists if there is no contradiction in its definition [Waterfield] |
| 22371 | Determinism threatens free will if actions can be causally traced to external factors [Foot] |
| 22372 | Not all actions need motives, but it is irrational to perform troublesome actions with no motive [Foot] |
| 20180 | A happy and joyous life must largely be a quiet life [Russell] |
| 22373 | People can act out of vanity without being vain, or even vain about this kind of thing [Foot] |
| 20176 | Boredom is an increasingly strong motivating power [Russell] |
| 20178 | Life is now more interesting, but boredom is more frightening [Russell] |
| 20177 | Boredom always involves not being fully occupied [Russell] |
| 20179 | Happiness involves enduring boredom, and the young should be taught this [Russell] |