Superstition is ... religion which is incongruous with intelligence.

Science keeps down the weed of superstition not by logic, but by rendering the mental soil unfit for its cultivation

Man's mind is like a store of idolatry and superstition; so much so that if a man believes his own mind it is certain that he will forsake God and forge some idol in his own brain

The brightest flashes in the world of thought are incomplete until they have been proven to have their counterparts in the world of fact.

Knowledge once gained casts a faint light beyond its own immediate boundaries. There is no discovery so limited as not to illuminate something beyond itself.

If I wanted a loving father, a faithful husband, an honorable neighbor, and a just citizen, I would seek him among the band of Atheists