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

I owe my success to the fact that I never had a clock in my workroom. Seventy-five of us worked twenty hours every day and slept only four hours - and thrived on it.

To do much clear thinking a person must arrange for regular periods of solitude when they can concentrate and indulge the imagination without distraction.

Results? Why, man, I have gotten lots of results! If I find 10,000 ways something won't work, I haven't failed. I am not discouraged, because every wrong attempt discarded is often a step forward.

The only thing I use my body for is to carry my brain around.

Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.

I am a vegetarian as well as a passionate anti-alcoholic, because I can thus make better use of my brain.