4 ideas
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] |
18151 | Could we replace sets by the open sentences that define them? [Chihara, by Bostock] |
17619 | We renounce all abstract entities [Goodman/Quine] |