He who cannot draw on three thousand years is living from ha... - Johann Wolfgang von Goethe

"Man is not born to solve the problem of the universe, but to find out what he has to do; and to restrain himself within the limits of his comprehension."

"Be above it! Make the world serve your purpose, but do not serve it!"

"Let mental culture go on advancing, let the natural sciences progress in even greater extent and depth, and the human mind widen itself as much as it desires: beyond the elevation and moral culture of Christianity, as it shines forth in the Gospels, it will not go."

"Nothing is worth more than this day."

"Know thyself? If I knew myself, I'd run away."