Our imagination is the only limit to what we can hope to have in the future.

My definition of an educated man is the fellow who knows the right thing to do at the time it has to be done. You can be sincere and still be stupid.

If a fellow wants to be nobody in the business world, let him neglect sending the mailman to somebody on his behalf.

Great steps in human progress are made by things that don't work the way philosophy thought they should. If things always worked the way they should, you could write the history of the world from now on. But they don't, and it is those deviations from the normal that make human progress.

Research means that you don't know, but are willing to find out.

In many ways ideas are more important than people - they are much more permanent.

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.