19 ideas
| 13010 | In order to select the logic justified by experience, we would need to use a lot of logic [Boghossian on Quine] |
| 9002 | Elementary logic requires truth-functions, quantifiers (and variables), identity, and also sets of variables [Quine] |
| 13681 | Logical consequence is marked by being preserved under all nonlogical substitutions [Quine, by Sider] |
| 13829 | If logical truths essentially depend on logical constants, we had better define the latter [Hacking on Quine] |
| 9003 | Set theory was struggling with higher infinities, when new paradoxes made it baffling [Quine] |
| 9004 | If set theory is not actually a branch of logic, then Frege's derivation of arithmetic would not be from logic [Quine] |
| 9006 | Commitment to universals is as arbitrary or pragmatic as the adoption of a new system of bookkeeping [Quine] |
| 9001 | Frege moved Kant's question about a priori synthetic to 'how is logical certainty possible?' [Quine] |
| 9005 | Examination of convention in the a priori begins to blur the distinction with empirical knowledge [Quine] |
| 21740 | I doubt whether ethics is part of philosophy [Russell] |
| 21741 | 'You ought to do p' primarily has emotional content, expressing approval [Russell] |
| 4375 | Evaluations are not disguised emotions; instead, emotion is a type of evaluation [Achtenberg] |
| 21746 | Unlike hate, all desires can be satisfied by love [Russell] |
| 21747 | Goodness is a combination of love and knowledge [Russell] |
| 21743 | In wartime, happiness is hating the enemy, because it gives the war a purpose [Russell] |
| 21742 | Originally virtue was obedience, to gods, government, or custom [Russell] |
| 21745 | Act so as to produce harmonious rather than discordant desires [Russell] |
| 21744 | Legally curbing people's desires is inferior to improving their desires [Russell] |
| 22891 | We could be aware of time if senses briefly vibrated, extending their experience of movement [Russell, by Bardon] |