If I do not believe as you believe, it proves that you do not believe as I believe, and that is all that it proves.

Every science has for its basis a system of principles as fixed and unalterable as those by which the universe is regulated and governed. Man cannot make principles; he can only discover them.

My country is wherever liberty lives.

Ignorance is of a peculiar nature; once dispelled, it is impossible to reestablish it. It is not originally a thing of itself, but is only the absence of knowledge; and though man may be kept ignorant, he cannot be made ignorant.

Of all the systems of religion that ever were invented, there is no more derogatory to the Almighty, more unedifiying to man, more repugnant to reason, and more contradictory to itself than this thing called Christianity.

The Christian religion is a parody on the worship of the sun, in which they put a man called Christ in the place of the sun, and pay him the adoration originally payed to the sun.

And to read the Bible without horror, we must undo everything that is tender, sympathizing and benevolent in the heart of man.