4 ideas
17699 | Variables are auxiliary notions, and not part of the 'eternal' essence of logic [Schönfinkel] |
12221 | 'Corner quotes' (quasi-quotation) designate 'whatever these terms designate' [Quine] |
19321 | We might do without names, by converting them into predicates [Quine, by Kirkham] |
19440 | How do you know you have conceived a thing deeply enough to assess its possibility? [Vaidya] |