9 ideas
| 468 | Musical performance can reveal a range of virtues [Damon of Ath.] |
| 20180 | A happy and joyous life must largely be a quiet life [Russell] |
| 20178 | Life is now more interesting, but boredom is more frightening [Russell] |
| 20176 | Boredom is an increasingly strong motivating power [Russell] |
| 20177 | Boredom always involves not being fully occupied [Russell] |
| 20179 | Happiness involves enduring boredom, and the young should be taught this [Russell] |
| 21730 | A 'field' is a property with a magnitude, distributed across all of space and time [Baggott] |
| 21731 | Fields can be 'scalar', or 'vector', or 'tensor', or 'spinor' [Baggott] |
| 21732 | The current standard model requires 61 particles [Baggott] |