Failure is really a matter of conceit. People don't work hard because, in their conceit, they imagine they'll succeed without ever making an effort. Most people believe that they'll wake up some day and find themselves rich. Actually, they've got it half right, because eventually they do wake up.

I am afraid of radium and polonium ... I don't want to monkey with them.

Fools call wise men fools. A wise man never calls any man a fool.

I am both pleased but astonished by the fact that mankind has not yet begun to use all the means and devices that are available for destruction. I hope that such weapons are never manufactured in quantity.

It is very beautiful over there. (last words)

First, study the present construction. Second, ask for all past experiences ...study and read everything you can on the subject.

What is a college? An institute of learning. What is a business? An institute of learning. Life, itself, is an institute of learning.