8 ideas
| 3269 | If your life is to be meaningful as part of some large thing, the large thing must be meaningful [Nagel] |
| 10304 | Very few things in set theory remain valid in intuitionist mathematics [Bernays] |
| 10303 | Restricted Platonism is just an ideal projection of a domain of thought [Bernays] |
| 10306 | Mathematical abstraction just goes in a different direction from logic [Bernays] |
| 3270 | Justifications come to an end when we want them to [Nagel] |
| 3268 | If a small brief life is absurd, then so is a long and large one [Nagel] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |