8 ideas
9470 | Modal logic is not an extensional language [Parsons,C] |
9469 | Substitutional existential quantifier may explain the existence of linguistic entities [Parsons,C] |
9468 | On the substitutional interpretation, '(∃x) Fx' is true iff a closed term 't' makes Ft true [Parsons,C] |
21375 | Reason can be vicious, and great crimes have to be rational [Schopenhauer] |
21379 | Man's three basic ethical incentives are egoism, malice and compassion [Schopenhauer] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
21376 | Philosophy treats animals as exploitable things, ignoring the significance of their lives [Schopenhauer] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |