11 ideas
22115 | Wise people should contemplate and discuss the truth, and fight against falsehood [Aquinas] |
14626 | In S5 matters of possibility and necessity are non-contingent [Williamson] |
14625 | Necessity is counterfactually implied by its negation; possibility does not counterfactually imply its negation [Williamson] |
14623 | Strict conditionals imply counterfactual conditionals: □(A⊃B)⊃(A□→B) [Williamson] |
14624 | Counterfactual conditionals transmit possibility: (A□→B)⊃(◊A⊃◊B) [Williamson] |
14531 | Rather than define counterfactuals using necessity, maybe necessity is a special case of counterfactuals [Williamson, by Hale/Hoffmann,A] |
14628 | Imagination is important, in evaluating possibility and necessity, via counterfactuals [Williamson] |
20700 | Without God's influence every operation would stop, so God causes everything [Aquinas] |
1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
15202 | Eternity coexists with passing time, as the centre of a circle coexists with its circumference [Aquinas] |
5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |