3 ideas
7803 | Modal logic began with translation difficulties for 'If...then' [Lewis,CI, by Girle] |
9425 | Lewis later proposed the axioms at the intersection of the best theories (which may be few) [Mumford on Lewis] |
19414 | Men are related to animals, which are related to plants, then to fossils, and then to the apparently inert [Leibniz] |