In each of us there is a little of all of us.

The construction of the universe is certainly very much easier to explain than is that of the plant.

There is a great difference between believing in something and believing in it again.

There is no more important rule of conduct in the world than this: attach yourself as much as you can to people who are abler than you and yet not so very different that you cannot understand them.

If nature be regarded as the teacher and we poor human beings as her pupils, the human race presents a very curious picture. We all sit together at a lecture and possess the necessary principles for understanding it, yet we always pay more attention to the chatter of our fellow students than to the lecturer's discourse. Or, if our neighbor copies something down, we sneak it from him, stealing what he himself may have heard imperfectly, and add it to our own errors of spelling and opinion.

God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.

A person reveals his character by nothing so clearly as the joke he resents.