Everything factual is, in a sense, theory. The blue of the sky exhibits the basic laws of chromatics. There is no sense in looking for something behind phenomena: they are theory.

Beware of wishing for anything in youth, because you will get it in middle age.

It is one of Heaven's best gifts to hold such a dear creature in one's arms.

Gray is the color of all theory

I've often heard it said a preacher might learn with a comedian for a teacher.

Age merely shows what children we remain.

You don't have to travel around the world to understand that the sky is blue everywhere