A speculator is a man who observes the future, and acts before it occurs.

I'm not smart. I try to observe. Millions saw the apple fall but Newton was the one who asked why.

Don't try to buy at the bottom and sell at the top. It can't be done except by liars.

A political leader must keep looking over his shoulder all the time to see if the boys are still there. If they aren't still there, he's no longer a political …