If it is nothingness that awaits us, let us make an injustice of it, let us fight against destiny, even without hope of victory.

All knowledge has an ultimate goal. Knowledge for the sake of knowledge is, say what you will, nothing but a dismal begging of the question.

Those faults we do not have, do not bother us.

My work...is to shatter the faith of men here, there, and everywhere, faith in affirmation, faith in negation, and faith in abstention from faith, and this for the sake of faith in faith itself.

The skeptic does not mean him who doubts, but him who investigates or researches, as opposed to him who asserts and thinks that he has found.

To love with the spirit is to pity, and he who pities most loves most.

Life is doubt, and faith without doubt is nothing but death.