The first requisite of success is the ability to apply your physical and mental energies to one problem without growing weary.

When down in the mouth, remember Jonah. He came out all right.

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.

Nearly every man who develops an idea works it up to the point where it looks impossible, and then he gets discouraged. That's not the place to become discouraged.

I am quite correctly described as 'more of a sponge than an inventor....'

Personally, I enjoy working about 18 hours a day. Besides the short catnaps I take each day, I average about four to five hours of sleep per night.

There is far more danger in public than in private monopoly, for when Government goes into business it can always shift its losses to the taxpayers. Government never makes ends meetand that is the first requisite of business.