To have a better life we must keep choosing how we are living.

There is a race between mankind and the universe. Mankind is trying to build bigger, better, faster, and more foolproof machines. The universe is trying to build bigger, better, and faster fools. So far the universe is winning.

The most difficult part about understanding something is that we understand it all.

Mere thinking cannot reveal to us the highest purpose.

This has been done elegantly by Minkowski; but chalk is cheaper than grey matter, and we will do it as it comes.

The same thinking and actions that created our problems cannot be used to solve them.

A man should look for what is, and not for what he thinks should be.