5 ideas
| 13007 | Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz] |
| 9329 | Justification is coherence with a background system; if irrefutable, it is knowledge [Lehrer] |
| 9330 | Generalization seems to be more fundamental to minds than spotting similarities [Lehrer] |
| 9328 | All conscious states can be immediately known when attention is directed to them [Lehrer] |
| 651 | Eurytus showed that numbers underlie things by making pictures of creatures out of pebbles [Eurytus, by Aristotle] |