(1879-1955) German-born Theoretical Physicist [Albert Einstein at Amazon]
I think and think for months and years. Ninety-nine times, the conclusion is false. The hundredth time I am right.
You cannot simultaneously prevent and prepare for war.
I never think of the future; it comes soon enough.
Try not to become a person of success, but rather try to become a person of value.
Imagination is more important than knowledge.
Only a life lived for others is a life worthwhile.