Think of life as a terminal illness, because, if you do, you will live it with joy and passion, as it ought to be lived.
Speak properly, and in as few words as you can, but always plainly; for the end of speech is not ostentation, but to be understood.
I say luck is when an opportunity comes along, and you're prepared for it.
There are worse things in life than death. Have you ever spent an evening with an insurance salesman?
The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one.
I must create a system, or be enslaved by another man's.
Ask not what you can do for your country. Ask what's for lunch.