High achievement always takes place in the framework of high expectation.

The world hates change, yet it is the only thing that has brought progress.

An inventor is simply a fellow who doesn't take his education too seriously.

It is not a disgrace to fail. Failing is one of the greatest arts in the world.

We need to teach the highly educated man that it is not a disgrace to fail and that he must analyze every failure to find its cause. He must learn how to fail intelligently, for failing is one of the greatest arts in the world.