We cannot always assure the future of our friends, but we have a better chance of assuring our future if we remember who our friends are.
The power of accurate observation is commonly called cynicism by those who have not got it.
The true power of mathematics lies in its ability to reveal the hidden patterns and structures that govern the universe.
The solution of a problem appears suddenly and is not approached by a gradual, step-by-step procedure.
"I see everything. That is my problem."