17 ideas
9271 | Human knowledge may not produce well-being; the examined life may not be worth living [Gray] |
13733 | Frege considered definite descriptions to be genuine singular terms [Frege, by Fitting/Mendelsohn] |
9874 | Contradiction arises from Frege's substitutional account of second-order quantification [Dummett on Frege] |
18252 | Real numbers are ratios of quantities, such as lengths or masses [Frege] |
18271 | We can't prove everything, but we can spell out the unproved, so that foundations are clear [Frege] |
10623 | Frege defined number in terms of extensions of concepts, but needed Basic Law V to explain extensions [Frege, by Hale/Wright] |
9975 | Frege ignored Cantor's warning that a cardinal set is not just a concept-extension [Tait on Frege] |
18165 | My Basic Law V is a law of pure logic [Frege] |
9275 | Knowledge does not need minds or nervous systems; it is found in all living things [Gray] |
9276 | The will hardly ever does anything; most of our life just happens to us [Gray] |
9190 | A concept is a function mapping objects onto truth-values, if they fall under the concept [Frege, by Dummett] |
13665 | Frege took the study of concepts to be part of logic [Frege, by Shapiro] |
9278 | Nowadays we identify the free life with the good life [Gray] |
9425 | Lewis later proposed the axioms at the intersection of the best theories (which may be few) [Mumford on Lewis] |
9280 | Over forty percent of the Earth's living tissue is human [Gray] |
9272 | Without Christianity we lose the idea that human history has a meaning [Gray] |
9279 | What was our original sin, and how could Christ's suffering redeem it? [Gray] |