4 ideas
10269 | Mathematics eliminates possibility, as being simultaneous actuality in sets [Putnam] |
14303 | Truth-functional conditionals have a simple falsification, when A is true and B is false [Peirce] |
22745 | Pherecydes said the first principle and element is earth [Pherecydes, by Sext.Empiricus] |
5883 | Pherecydes was the first to say that the soul is eternal [Pherecydes, by Cicero] |