I do then with my friends as I do with my books. I would have them where I can find them, but I seldom use them.

Knowledge is the knowing that we cannot know.

The chief value of the new fact is to enhance the great and constant fact of life.

Every man has his own courage, and is betrayed because he seeks in himself the courage of other persons.

All the mistakes I make arise from forsaking my own station and trying to see the object from another person's point of view.

Every particular in nature, a leaf, a drop, a crystal, a moment of time is related to the whole, and partakes of the perfection of the whole.

An answer in words is delusive; it is really no answer to the questions you ask.