5 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
12887 | A whole must have one characteristic, an internal relation, and a structure [Rescher/Oppenheim] |
23304 | The ancient Memorists said virtually all types of thinking could be done simply by memory [Sorabji] |
23303 | Stoics say true memory needs reflection and assent, but animals only have perceptual recognition [Sorabji] |
10246 | The limit of science is isomorphism of theories, with essences a matter of indifference [Weyl] |