Every wrong attempt discarded is another step forward

The endeavor to change universal power by selfish supplication I do not believe in.

Everyone steals in commerce and industry. I've stolen a lot, myself. But I know how to steal! They don't know how to steal!

To those searching for truth -- not the truth of dogma and darkness but the truth brought by reason, search, examination, and inquiry, discipline is required. For faith, as well intentioned as it may be, must be built on facts, not fiction -- faith in fiction is a damnable false hope.

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 inventor tries to meet the demand of a crazy civilization.

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!