31 ideas
2922 | All intelligent Romans were Epicureans [Nietzsche] |
23520 | Truth has had to be fought for, and normal life must be sacrificed to achieve it [Nietzsche] |
2914 | One must never ask whether truth is useful [Nietzsche] |
16477 | Asserting not-p is saying p is false [Russell] |
16484 | There are four experiences that lead us to talk of 'some' things [Russell] |
16486 | The physical world doesn't need logic, but the mental world does [Russell] |
2947 | Questions wouldn't lead anywhere without the law of excluded middle [Russell] |
16479 | 'Or' expresses hesitation, in a dog at a crossroads, or birds risking grabbing crumbs [Russell] |
16480 | A disjunction expresses indecision [Russell] |
16483 | Disjunction may also arise in practice if there is imperfect memory. [Russell] |
16481 | 'Or' expresses a mental state, not something about the world [Russell] |
16487 | Maybe the 'or' used to describe mental states is not the 'or' of logic [Russell] |
16475 | A 'heterological' predicate can't be predicated of itself; so is 'heterological' heterological? Yes=no! [Russell] |
13768 | Validity can preserve certainty in mathematics, but conditionals about contingents are another matter [Edgington] |
13770 | There are many different conditional mental states, and different conditional speech acts [Edgington] |
13764 | Are conditionals truth-functional - do the truth values of A and B determine the truth value of 'If A, B'? [Edgington] |
13765 | 'If A,B' must entail ¬(A & ¬B); otherwise we could have A true, B false, and If A,B true, invalidating modus ponens [Edgington] |
16482 | All our knowledge (if verbal) is general, because all sentences contain general words [Russell] |
4758 | Naïve realism leads to physics, but physics then shows that naïve realism is false [Russell] |
16476 | For simple words, a single experience can show that they are true [Russell] |
16485 | Perception can't prove universal generalisations, so abandon them, or abandon empiricism? [Russell] |
16478 | A mother cat is paralysed if equidistant between two needy kittens [Russell] |
2921 | Philosophy grasps the limits of human reason, and values are beyond it [Nietzsche] |
20138 | Christianity is at war with the higher type of man, and excommunicates his basic instincts [Nietzsche] |
20375 | Virtues must be highly personal; if not, it is merely respect for a concept [Nietzsche] |
2915 | Each person should devise his own virtues and categorical imperative [Nietzsche] |
2920 | A God who cures us of a head cold at the right moment is a total absurdity [Nietzsche] |
2917 | Christianity is a revolt of things crawling on the ground against elevated things [Nietzsche] |
2918 | The story in Genesis is the story of God's fear of science [Nietzsche] |
2919 | 'Faith' means not wanting to know what is true [Nietzsche] |
2916 | The great lie of immortality destroys rationality and natural instinct [Nietzsche] |