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.

Knowledge for the sake of knowledge! Truth for truth's sake! This is inhuman.

We men do nothing but lie and make ourselves important. Speech was invented for the purpose of magnifying all of our sensations and impressions — perhaps so that we could believe in them.

Faith which does not doubt is dead faith.

Anyone who in discussion relies upon authority uses, not his understanding, but rather his memory.

The greatest height of heroism to which an individual, like a people, can attain is to know how to face ridicule.

The devil is an angel too.