It is undesirable to believe a proposition when there is no ground whatever for supposing it true — Bertrand Russell Copy Share Image
Analytic It is clear that the definition of "logic" or "mathematics" must be sought by trying to give a new definition of… — Bertrand Russell Copy Share Image
A priori Logical propositions are such as can be known a priori without study of the actual world. — Bertrand Russell Copy Share Image
The fundamental principle in the analysis of propositions containing descriptions is this: Every proposition which we can understand must be composed wholly… — Bertrand Russell Copy Share Image
In obedience to the feeling of reality, we shall insist that, in the analysis of propositions, nothing "unreal" is to be admitted.… — Bertrand Russell Copy Share Image
In the first place a philosophical proposition must be general. It must not deal specially with things on the surface of the… — Bertrand Russell Copy Share Image
Science, in its ultimate ideal, consists of a set of propositions arranged in a hierarchy, the lowest level of the hierarchy being… — Bertrand Russell Copy Share Image
Pure mathematics consists entirely of assertions to the effect that, if such and such a proposition is true of anything, then suchand… — Bertrand Russell Copy Share Image
If the State does not acquire supremacy over [vast private] enterprises, it becomes their puppet, and they become the real State. — Bertrand Russell Copy Share Image
That the world is in a bad shape is undeniable, but there is not the faintest reason in history to suppose that Christianity offers… — Bertrand Russell Copy Share Image
Those who advocate common usage in philosophy sometimes speak in a manner that suggests the mystique of the 'common man.' — Bertrand Russell Copy Share Image
“Such, in outline, but even more purposeless, more void of meaning, is the world which Science presents for our belief. Amid such a world,… — Bertrand Russell Copy Share Image
Dr. Arnold . . . the admired reformer of public schools, came across some cranks who thought it a mistake to flog boys. Anyone… — Bertrand Russell Copy Share Image
Of all evils of war the greatest is the purely spiritual evil: the hatred, the injustice, the repudiation of truth, the artificial conflict. — Bertrand Russell Copy Share Image
Aristotle maintained that women have fewer teeth than men; although he was twice married, it never occurred to him to verify this statement by… — Bertrand Russell Copy Share Image
If an opinion contrary to your own makes you angry, that is a sign that you are subconsciously aware of having no good reason… — Bertrand Russell Copy Share Image
I cannot escape from the conclusion that the great ages of progress have depended upon a small number of individuals of transcendent ability. — Bertrand Russell Copy Share Image
I think it would be just to say the most essential characteristic of mind is memory, using this word in its broadest sense to… — Bertrand Russell Copy Share Image
The newspapers at one time said that I was dead but after carefully examining the evidence I came to the conclusion that this statement… — Bertrand Russell Copy Share Image
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