Waste is worse than loss. The time is coming when every person who lays claim to ability will keep the question of waste before him constantly. The scope of thrift is limitless.

There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter, who will dare torture and death in order to inflict torture and death, will be appalled, and so abandon war forever.

Opportunity is missed by most people because it is dressed in overalls and looks like work.

There is no substitute for hard work.

I have not failed. I've just found 10,000 ways that won't work.

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.

The reason a lot of people do not recognize opportunity is because it usually goes around wearing overalls looking like hard work.

I never did a day's work in my life. It was all fun.

The three great essentials to achieve anything worth while are: Hard work, Stick-to-itiveness, and Common sense.

I never did anything by accident, nor did any of my inventions come by accident they came by work.