5 ideas
| 291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
| 8923 | Numbers are identified by their main properties and relations, involving the successor function [MacBride] |
| 8926 | For mathematical objects to be positions, positions themselves must exist first [MacBride] |
| 12729 | The cause of a change is not the real influence, but whatever gives a reason for the change [Leibniz] |
| 293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |