4 ideas
12733 | Because of the definitions of cause, effect and power, cause and effect have the same power [Leibniz] |
8970 | Our notion of identical sets involves identical members, which needs absolute identity [Hawthorne] |
12734 | Every necessary proposition is demonstrable to someone who understands [Leibniz] |
467 | A virtue is a combination of intelligence, strength and luck [Ion] |