Americans need rest, but do not know it.
In the first place a philosophical proposition must be general. It must not deal specially with things on the surface of the earth, or within the solar system, or with any other portion of space and time. . . . This brings us to a second characteristic of philosophical propositions, namely that they must be a priori. A philosophical proposition must be such as can neither be proved nor disproved by empirical evidence. . . . Philosophy, if what has been said is correct, becomes indistinguishable from logic as that word has now come to be used.
I can't tell whether I am living in a dream or a nightmare.
Love is a slippery eel that bites like hell
Opinions which justify cruelty are inspired by cruel impulses.
Even in the most purely logical realms, it is insight that first arrives at what is new.
Boredom is... a vital problem for the moralist, since half the sins of mankind are caused by the fear of it.
In a logically perfect language, there will be one word and no more for every simple object, and everything that is not simple will be expressed by a combination of words, by a combination derived, of course, from the words for the simple things that enter in, one word for each simple component.
In all the creative work that I have done, what has come first is a problem, a puzzle involving discomfort.
Education ought to foster the wish for truth, not the conviction that some particular creed is the truth.
The Mormons had a divine revelation in favour of polygamy, but under pressure from the United States Government they discovered that the revelation was not binding.
Modern life cannot be constructed on . . . physically strenuous principles. A great deal of work is sedentary, and most manual work exercises only a few specialized muscles.
Freedom comes only to those who no longer ask of life that it shall yield them any of those personal goods that are subject to the mutations of time.
It was the duty of wives to submit to husbands, not of husbands to submit to wives. . . men have stronger muscles than women.
The wise use of leisure, it must be conceded, is a product of civilization and education.
For some reason which I have failed to understand, many people like the system [scientific totalitarianism] when it is Russian but disliked the very same system when it was German. I am compelled to think that this is due to the power of labels; these people like whatever is labelled ‘Left’ without examining whether the label has any justification.
It is one of the defects of modern higher education that it has become too much a training in the acquisition of certain kinds of skill, and too little an enlargement of the mind and heart by an impartial survey of the world.
What vanity needs for its satisfaction is glory, and it's easy to have glory without power.
Psychology often becomes the disease of which it should be the cure.
Ironclads and Maxim guns must be the ultimate arbiters of metaphysical truth.
The essence of good manners consists in making it clear that one has no wish to hurt. When it is clearly necessary to hurt, it must be done in such a way as to make it evident that the necessity is felt to be regrettable.
I am looking forward very much to getting back to Cambridge, and being able to say what I think and not to mean what I say: two things which at home are impossible. Cambridge is one of the few places where one can talk unlimited nonsense and generalities without anyone pulling one up or confronting one with them when one says just the opposite the next day.
It seems clear to me that marriage ought to be constituted by children, and relations not involving children ought to be ignored by the law and treated as indifferent by public opinion. It is only through children that relations cease to be a purely private matter.
The supreme maxim in scientific philosophising is this: wherever possible, logical constructions are to be substituted for inferred entities.
To choose one sock from each of infinitely many pairs of socks requires the Axiom of Choice, but for shoes the Axiom is not needed.
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