Show me a thoroughly satisfied man - and I will show you a failure.

I know this world is ruled by Infinite Intelligence. It required Infinite Intelligence to create it and it requires Infinite Intelligence to keep it on its course ... It is mathematical in its precision.

Be courageous. I have seen many depressions in business. Always America has emerged from these stronger and more prosperous. Be brave as your fathers before you. Have faith! Go forward!

The only time I really become discouraged is when I think of all the things I would like to do and the little time I have in which to do them.

The first requisite for success is to develop the ability to focus.

Success depends on how many experiments you can fit into 24 hours

The radio craze will die out in time.