The distance between insanity and genius is measured only by success.
Those who make peaceful revolution impossible will make violent revolution inevitable.
Our greatest glory is not in never falling, but in rising every time we fall.
Fall seven times, stand up eight.
The unexamined life is not worth living.
An ounce of prevention is worth a pound of cure.
The best way to escape from a problem is to solve it.
The problem is not that there are problems. The problem is expecting otherwise and thinking that having problems is a problem.
When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong.
The significant problems we face cannot be solved at the same level of thinking we were at when we created them.