4 ideas
13160 | To exist and be understood, a multitude must first be reduced to a unity [Leibniz] |
13161 | Substances are everywhere in matter, like points in a line [Leibniz] |
7803 | Modal logic began with translation difficulties for 'If...then' [Lewis,CI, by Girle] |
3643 | The concept of mind excludes body, and vice versa [Descartes] |