You can do what you will, but in any given moment of your life you can will only one definite thing and absolutely nothing other than that one thing.

After your death you will be what you were before your birth.

Whatever torch we kindle, and whatever space it may illuminate, our horizon will always remain encircled by the depth of night.

Every nation criticizes every other one - and they are all correct.

A man's knowledge may be said to be mature, in other words, when it has reached the most complete state of perfection to which he, as an individual, is capable of bringing it, when an exact correspondence is established between the whole of his abstract ideas and the things he has actually perceived for himself. His will mean that each of his abstract ideas rests, directly or indirectly, upon a basis of observation, which alone endows it with any real value; and also that he is able to place every observation he makes under the right abstract idea which belongs to it.

Life is a language in which certain truths are conveyed to us; if we could learn them in some other way, we should not live.

Pantheism is only a polite form of atheism.