If we did all the things we are capable of doing, we would literally astound ourselves.

Be brave as your fathers before you. Have faith and go forward.

Accomplishing something provides the only real satisfaction in life.

I am proud of the fact that I never invented weapons to kill.

I know of over 3,000 ways [that] a light bulb does not work.

I will not say I failed 1000 times, I will say that I discovered there are 1000 ways that can cause failure

Being busy does not always mean real work. The object of all work is production or accomplishment and to either of these ends there must be forethought, system, planning, intelligence, and honest purpose, as well as perspiration. Seeming to do is not doing.