If we knew what it was we were doing, it would not be called research, would it?

A wise man can learn more from a foolish question than a fool can learn from a wise answer.

I've learned that you shouldn't go through life with a catcher's mitt on both hands you need to be able to throw something back.

Tell me and I forget. Teach me and I remember. Involve me and I learn.

I learned long ago, never to wrestle with a pig. You get dirty, and besides, the pig likes it.