22 ideas
7914 | To try to be wise all on one's own is folly [Rochefoucauld] |
18806 | Frege thought traditional categories had psychological and linguistic impurities [Frege, by Rumfitt] |
8490 | First-level functions have objects as arguments; second-level functions take functions as arguments [Frege] |
8492 | Relations are functions with two arguments [Frege] |
13007 | Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz] |
8487 | Arithmetic is a development of logic, so arithmetical symbolism must expand into logical symbolism [Frege] |
18899 | Frege takes the existence of horses to be part of their concept [Frege, by Sommers] |
4028 | Frege allows either too few properties (as extensions) or too many (as predicates) [Mellor/Oliver on Frege] |
8489 | The concept 'object' is too simple for analysis; unlike a function, it is an expression with no empty place [Frege] |
7118 | La Rochefoucauld's idea of disguised self-love implies an unconscious mind [Rochefoucauld, by Sartre] |
9947 | Concepts are the ontological counterparts of predicative expressions [Frege, by George/Velleman] |
10319 | An assertion about the concept 'horse' must indirectly speak of an object [Frege, by Hale] |
8488 | A concept is a function whose value is always a truth-value [Frege] |
9948 | Unlike objects, concepts are inherently incomplete [Frege, by George/Velleman] |
4972 | I may regard a thought about Phosphorus as true, and the same thought about Hesperus as false [Frege] |
7912 | Judging by effects, love looks more like hatred than friendship [Rochefoucauld] |
7915 | Supreme cleverness is knowledge of the real value of things [Rochefoucauld] |
7917 | Realising our future misery is a kind of happiness [Rochefoucauld] |
7913 | Virtue doesn't go far without the support of vanity [Rochefoucauld] |
7916 | True friendship is even rarer than true love [Rochefoucauld] |
9299 | We are bored by people to whom we ourselves are boring [Rochefoucauld] |
8491 | The Ontological Argument fallaciously treats existence as a first-level concept [Frege] |