"He who influences the thought of his times influences all the times that follow."

"All formal dogmatic religions are fallacious and must never be accepted by self-respecting persons as final."

"Men will fight for superstition as quickly as for the living truth—even more so, since superstition is intangible and cannot be reached."

"Fables should be taught as fables, myths as myths, and miracles as poetic fancies."

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