It takes physical courage to indulge in wickedness. The "good" are too cowardly to do it.

One should not go into churches if one wants to breathe pure air.

To discover he is loved in return ought really to disenchant the lover with the beloved.

A matter that becomes clear ceases to concern us.--What was that god thinking who counseled, "Know thyself!" Did he perhaps mean,"Cease to concern yourself! Become objective!"--And Socrates?--And "scientific men"?

Modern science has as its object as little pain as possible, as long a life as possible - hence a sort of eternal blessedness, but of a very limited kind in comparison with the promises of religion.

What is the truth, but a lie agreed upon.

The so-called paradoxes of an author, to which a reader takes exception, often exist not in the author's book at all, but rather in the reader's head.