Good nature is the cheapest commodity in the world.

As long as every question is answered by the word "God," scientific inquiry is simply impossible.

Nothing but truth is immortal.

Is there an intelligent man or woman now in the world who believes in the Garden of Eden story? If you find any man who believes it, strike his forehead and you will hear an echo. Something is for rent.

The hope of science is the perfection of the human race. The hope of theology is the salvation of a few, and the damnation of almost everybody.

Every library is an arsenal.

The few took advantage of the ignorant many. They pretended to have received messages from the Unknown. They stood between the helpless multitude and the gods. They were the carriers of flags of truce. At the court of heaven they presented the cause of man, and upon the labor of the deceived they lived.