Sometimes I think we're alone. Sometimes I think we're not. In either case, the thought is staggering.

Parents are usually more careful to bestow knowledge on their children rather than virtue, the art of speaking well rather than doing well but their manners should be of the greatest concern.

When I am working on a problem, I never think about beauty but when I have finished, if the solution is not beautiful, I know it is wrong.

I'm not a genius. I'm just a tremendous bundle of experience.

Faith is much better than belief. Belief is when someone else does the thinking.