3 ideas
14305 | In the truth-functional account a burnt-up match was soluble because it never entered water [Carnap] |
6004 | The cardinal virtues are theoretical (based on knowledge), and others are 'non-theoretical' [Hecato, by Dorandi] |
2116 | The concept of an existing thing must contain more than the concept of a non-existing thing [Leibniz] |