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

I am not overly impressed by the great names and reputations of those who might be trying to beat me to an invention. It's their 'ideas' that appeal to me. I am quite correctly described as 'more of a sponge than an inventor

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!

Negative results are just what I want. They’re just as valuable to me as positive results. I can never find the thing that does the job best until I find the ones that don’t.

Youth doesn't take advice.

To my mind the old masters are not art; their value is in their scarcity.

To get a great idea, come up with lots of them.