4 ideas
21548 | The null class is the class with all the non-existents as its members [MacColl, by Lackey] |
10152 | Set theory and logic are fairy tales, but still worth studying [Tarski] |
10151 | I am a deeply convinced nominalist [Tarski] |
19941 | Thou shalt love thy neighbour as thyself [Anon (Leviticus)] |