"One is never so dangerous when one has no shame, than when one has grown too old to blush."

"Let there be no doubt of it: religions are the cradles of despotism."

"My only regret is that I was born into a world of cowards, who tremble at the sight of truth."

"My manner of thinking, I own, is not for all the world. Few will like it. It is too bold. It will not submit to the curb of any established system, nor will it be bound by any known code. It is free, …"

"I am an atheist, and I am proud of it."