Real, constructive mental power lies in the creative thought that shapes your destiny, and your hour-by-hour mental conduct produces power for change in your life. Develop a train of thought on which to ride. The nobility of your life as well as your happiness depends upon the direction in which that train of thought is going.

I inherited my ability from both parents; my mother's ability for spending money, and my father's ability for not earning it.

America is a country that doesn't know where it is going but is determined to set a speed record getting there.

An economist is an expert who will know tomorrow why the things he predicted yesterday didn't happen today.

A philosopher is a blind man in a dark room looking for a black cat that isn't there. A theologian is the man who finds it.

The man who believes he can do it is probably right, and so is the man who believes he can't.

If at first you don't succeed, you may be at your level of incompetence already.