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One ought to hold on to one's heart; for if one lets it go, one soon loses control of the head too.

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Fanatics are picturesque, mankind would rather see gestures than listen to reasons.

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Nothing has been purchased more dearly than the little bit of reason and sense of freedom which now constitutes our pride.

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The deepest and most sublime hatred is a hatred which creates ideals and transforms values—something whose like has never been seen on earth

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love as a passion—it is our European specialty—must absolutely be of noble origin; as is well known, its invention is due to the Provencal poet-cavali...more

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Doubt as sin. — Christianity has done its utmost to close the circle and declared even doubt to be sin. One is supposed to be cast into belief without...more

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Do not make passion an argument for truth! - O you good-natured and even noble enthusiasts, I know you! You want to win your argument against us, but ...more

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None of the people have any real interest in a science, who only begin to be enthusiastic about it when they themselves have made discoveries in it.

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The great works are produced in such an ecstasy of love that they must always be unworthy of it, however great their worth otherwise.

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As yet hath his knowledge not learned to smile, and to be without jealously ; as yet hath his gushing passion not become calm in beauty.