Alfred North Whitehead

If a dog jumps in your lap, it is because he is fond of you; but if a cat does the same thing, it is because your lap is warmer.

It requires a very unusual mind to undertake the analysis of the obvious.

The point about zero is that we do not need to use it in the operation of daily life. No one goes out to buy zero fish.

Seek simplicity, and distrust it.

Philosophy begins in wonder. And, at the end, when philosophic thought has done its best, the wonder remains.