16 ideas
| 19336 | Wisdom involves the desire to achieve perfection [Leibniz] |
| 291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
| 3035 | Dialectic involves conversations with short questions and brief answers [Diog. Laertius] |
| 7696 | Leibniz first asked 'why is there something rather than nothing?' [Leibniz, by Jacquette] |
| 19341 | There must be a straining towards existence in the essence of all possible things [Leibniz] |
| 19428 | Because something does exist, there must be a drive in possible things towards existence [Leibniz] |
| 5047 | The world is physically necessary, as its contrary would imply imperfection or moral absurdity [Leibniz] |
| 1816 | Sceptics say demonstration depends on self-demonstrating things, or indemonstrable things [Diog. Laertius] |
| 1819 | Scepticism has two dogmas: that nothing is definable, and every argument has an opposite argument [Diog. Laertius] |
| 3064 | When sceptics say that nothing is definable, or all arguments have an opposite, they are being dogmatic [Diog. Laertius] |
| 3033 | Induction moves from some truths to similar ones, by contraries or consequents [Diog. Laertius] |
| 19343 | We follow the practical rule which always seeks maximum effect for minimum cost [Leibniz] |
| 1838 | Cyrenaic pleasure is a motion, but Epicurean pleasure is a condition [Diog. Laertius] |
| 1769 | Cynics believe that when a man wishes for nothing he is like the gods [Diog. Laertius] |
| 293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |
| 19429 | The principle of determination in things obtains the greatest effect with the least effort [Leibniz] |