“Logic was, formerly, the art of drawing inferences; it has now become the art of abstaining from inferences, since it has appeared that the inferences we feel naturally inclined to make are hardly ever valid.”

“What we firmly believe, if it is true, is called knowledge, provided it is either intuitive or inferred (logically or psychologically) from intuitive knowledge from which it follows logically. What we firmly believe, if it is not true, is called error. What we firmly believe, if it is neither knowledge nor error, and also what we believe hesitatingly, because it is, or is derived from, something which has not the highest degree of self-evidence, may be called probable opinion. Thus the greater part of what would commonly pass as knowledge is more or less probable opinion.”

“Philosophy, for Plato, is a kind of vision, the 'vision of truth' ... Everyone who has done any kind of creative work has experienced, in a greater or less degree, the state of mind in which, after long labour, truth or beauty appears, or seems to appear, in a sudden glory – it may only be about some small matter, or it may be about the universe ... I think most of the best creative work, in art, in science, in literature, and in philosophy, has been the result of such a moment.”

“The only kind of appeal that wins any instinctive response in party politics is an appeal to hostile feeling; the men who perceive the need of cooperation are powerless. Until education has been directed for a generation into new channels, and the Press has abandoned incitements to hatred, only harmful policies have any chance of being adopted in practice by our present political methods. But there is no obvious means of altering education and the Press until our political system is altered. From this dilemma there is no issue by means of ordinary action, at any rate for a long time to come. The best that can be hoped, it seems to me, is that we should, as many of us as possible, become political skeptics, rigidly abstaining from belief in the various attractive party programmes that are put before us from time to time.”

“In America everybody is of the opinion that he has no social superiors, since all men are equal, but he does not admit that he has no social inferiors, for, from the time of Jefferson onward, the doctrine that all men are equal applies only upwards, not downwards.”

“If throughout your life you abstain from murder, theft, fornication, perjury, blasphemy, and disrespect toward your parents, church, and your king, you are conventionally held to deserve moral admiration even if you have never done a single kind, generous or useful action. This very inadequate notion of virtue is an outcome of taboo morality, and has done untold harm.”

“Since this craving (for material possessions) is in the nature of competition, it only brings happiness when we outdistance a rival, to whom it brings correlative pain.”