People who will not turn a shovel full of dirt on the project (Muscle Shoals Dam) nor contribute a pound of material, will collect more money from the United States than will the People who supply all the material and do all the work. This is the terrible thing about interest.

I try not to invent things that people don't need.

The greatest discoveries will be along spiritual lines. This is the field where miracles are going to happen. Spiritual power is the greatest underdeveloped power and has the greatest future.

Because ideas have to be original only with regard to their adaptation to the problem at hand, I am always extremely interested in how others have used used them.

Consider data without prejudice.

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.

I owe my success to the fact that I never had a clock in my workroom.