4 ideas
9355 | One sort of circularity presupposes a premise, the other presupposes a rule being used [Braithwaite, by Devitt] |
22329 | Logic is highly general truths abstracted from reality [Russell, by Glock] |
17699 | Variables are auxiliary notions, and not part of the 'eternal' essence of logic [Schönfinkel] |
21569 | It is good to generalise truths as much as possible [Russell] |