In the part of this universe that we know there is great injustice, and often the good suffer, and often the wicked prosper, and one hardly knows which of those is the more annoying.

The good life, as I conceive it, is a happy life. I do not mean that if you are good you will be happy - I mean that if you are happy you will be good.

This is patently absurd; but whoever wishes to become a philosopher must learn not to be frightened by absurdities.

If a man is offered a fact which goes against his instincts, he will scrutinize it closely, and unless the evidence is overwhelming, he will refuse to believe it. If, on the other hand, he is offered something which affords a reason for acting in accordance to his instincts, he will accept it even on the slightest evidence.

The greatest challenge to any thinker is stating the problem in a way that will allow a solution.

The most savage controversies are those about matters as to which there is no good evidence either way.

Everything is vague to a degree you do not realize till you have tried to make it precise.

Patriots always talk of dying for their country and never of killing for their country.

Not to be absolutely certain is, I think, one of the essential things in rationality.

When one admits that nothing is certain one must, I think, also admit that some things are much more nearly certain than others.