35 ideas
6420 | Only by analysing is progress possible in philosophy [Russell] |
6432 | Analysis gives new knowledge, without destroying what we already have [Russell] |
6437 | The theory of types makes 'Socrates and killing are two' illegitimate [Russell] |
6442 | Truth belongs to beliefs, not to propositions and sentences [Russell] |
6436 | I gradually replaced classes with properties, and they ended as a symbolic convenience [Russell] |
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] |
7528 | Leibniz bases everything on subject/predicate and substance/property propositions [Russell] |
13829 | If logical truths essentially depend on logical constants, we had better define the latter [Hacking on Quine] |
6439 | Names are meaningless unless there is an object which they designate [Russell] |
9003 | Set theory was struggling with higher infinities, when new paradoxes made it baffling [Quine] |
6423 | We tried to define all of pure maths using logical premisses and concepts [Russell] |
9004 | If set theory is not actually a branch of logic, then Frege's derivation of arithmetic would not be from logic [Quine] |
6424 | Formalists say maths is merely conventional marks on paper, like the arbitrary rules of chess [Russell] |
6425 | Formalism can't apply numbers to reality, so it is an evasion [Russell] |
6426 | Intuitionism says propositions are only true or false if there is a method of showing it [Russell] |
6419 | In 1899-1900 I adopted the philosophy of logical atomism [Russell] |
6438 | Complex things can be known, but not simple things [Russell] |
6434 | Facts are everything, except simples; they are either relations or qualities [Russell] |
9006 | Commitment to universals is as arbitrary or pragmatic as the adoption of a new system of bookkeeping [Quine] |
6440 | Universals can't just be words, because words themselves are universals [Russell] |
9001 | Frege moved Kant's question about a priori synthetic to 'how is logical certainty possible?' [Quine] |
6430 | In epistemology we should emphasis the continuity between animal and human minds [Russell] |
9005 | Examination of convention in the a priori begins to blur the distinction with empirical knowledge [Quine] |
6441 | Pragmatism judges by effects, but I judge truth by causes [Russell] |
6431 | Empiricists seem unclear what they mean by 'experience' [Russell] |
6444 | True belief about the time is not knowledge if I luckily observe a stopped clock at the right moment [Russell] |
6433 | Behaviourists struggle to explain memory and imagination, because they won't admit images [Russell] |
6443 | Surprise is a criterion of error [Russell] |
6427 | Unverifiable propositions about the remote past are still either true or false [Russell] |
6435 | You can believe the meaning of a sentence without thinking of the words [Russell] |
6000 | The goal is rationality in the selection of things according to nature [Diogenes of Babylon, by Blank] |
5999 | The good is what is perfect by nature [Diogenes of Babylon, by Blank] |
6001 | Justice is a disposition to distribute according to desert [Diogenes of Babylon, by Blank] |