Love can do much, but duty more. - Johann Wolfgang von Goethe

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

"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."

"Life belongs to the living, and he who lives must be prepared for changes."

"What is important in life is life, and not the result of life."

"The world is so empty if one thinks only of mountains, rivers & cities; but to know someone who thinks & feels with us, & who, though distant, is close to us in spirit, this makes the earth for us an inhabited garden."