6 ideas
| 16541 | All the intrinsic properties of a thing should be deducible from its definition [Spinoza] |
| 19389 | Truth is a characteristic of possible thoughts [Leibniz] |
| 19388 | True and false seem to pertain to thoughts, yet unthought propositions seem to be true or false [Leibniz] |
| 13073 | To understand the properties we must know the essence, as with a circle [Spinoza] |
| 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] |