"Fables should be taught as fables, myths as myths, and miracles as poetic fancies. To teach superstitions as truths is a most terrible thing."

"To rule by fettering the mind through fear of punishment in another world is just as base as to use force."

"The mind is its own place, and in itself can make a heaven of hell, a hell of heaven."

"The only way to wisdom is through fearless questioning."

"Truth does not change because it is, or is not, believed by a majority of the people."