4 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
20239 | Unlike us, the early Greeks thought envy was a good thing, and hope a bad thing [Hesiod, by Nietzsche] |
10246 | The limit of science is isomorphism of theories, with essences a matter of indifference [Weyl] |
20698 | Irenaeus says evil is necessary for perfect human development [Irenaeus, by Davies,B] |