The investigation of nature is an infinite pasture-ground where all may graze, and where the more bite, the longer the grass grows, the sweeter is its flavor, and the more it nourishes."

The quality of moral behaviour varies in inverse ratio to the number of human beings involved.

"The finest works of art are precious, among other reasons, because they make it possible for us to know, if only imperfectly and for a little while, what it actually feels like to think subtly and feel nobly."

Experience is not what happens to you; it is what you do with what happens to you.

"To his dog, every man is Napoleon; hence the constant popularity of dogs."