17 ideas
| 9271 | Human knowledge may not produce well-being; the examined life may not be worth living [Gray] |
| 7548 | Classes, grouped by a convenient property, are logical constructions [Russell] |
| 7545 | Visible things are physical and external, but only exist when viewed [Russell] |
| 7553 | Sense-data are purely physical [Russell] |
| 7549 | If my body literally lost its mind, the object seen when I see a flash would still exist [Russell] |
| 9275 | Knowledge does not need minds or nervous systems; it is found in all living things [Gray] |
| 3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |
| 7546 | A man is a succession of momentary men, bound by continuity and causation [Russell] |
| 9276 | The will hardly ever does anything; most of our life just happens to us [Gray] |
| 7550 | We could probably, in principle, infer minds from brains, and brains from minds [Russell] |
| 9278 | Nowadays we identify the free life with the good life [Gray] |
| 7551 | Matter is a logical construction [Russell] |
| 7547 | Matter requires a division into time-corpuscles as well as space-corpuscles [Russell] |
| 7552 | Six dimensions are needed for a particular, three within its own space, and three to locate that space [Russell] |
| 9280 | Over forty percent of the Earth's living tissue is human [Gray] |
| 9272 | Without Christianity we lose the idea that human history has a meaning [Gray] |
| 9279 | What was our original sin, and how could Christ's suffering redeem it? [Gray] |