5 ideas
4042 | Metaphysics requires the idea of people (speakers) located in space and time [Davidson] |
8693 | An 'abstraction principle' says two things are identical if they are 'equivalent' in some respect [Boolos] |
4041 | Sentences held true determine the meanings of the words they contain [Davidson] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |