The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.
An empty stomach is not a good political advisor.
I never think of the future. It comes soon enough.
I think and think for months and years. Ninety-nine times, the conclusion is false. The hundredth time I am right.
Solitude is painful when one is young, but delightful when one is more mature.
The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery everyday. Never lose a holy curiosity.
The whole of science is nothing more than a refinement of everyday thinking.
Sometimes one pays most for the things one gets for nothing.
Everything should be made as simple as possible, but not simpler.
Try not to become a man of success but rather try to become a man of value.
He who can no longer pause to wonder and stand rapt in awe is as good as dead; his eyes are closed.