It is sometimes well for a blatant error to draw attention to overmodest truths.

My pessimism extends to the point of even suspecting the sincerity of other pessimists.

Take heed of critics even when they are not fair; resist them even when they are.

Being right is less important to us than the freedom to be wrong.

I should have no use for a paradise in which I should be deprived of the right to prefer hell.

Science had better not free the minds of men too much, before it has tamed their instincts.

Hatred, for the man who is not engaged in it, is a little like the odor of garlic for one who hasn't eaten any.