Just because something doesn't do what you planned it to do doesn't mean it's useless.

Results! Why, man, I have gotten a lot of results. I know several thousand things that won't work.

Just because something doesn't do what you planned it to do doesn't mean it's useless.

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

The doctor of the future will give no medicine but will instruct his patient in the care of the human frame, in diet, and the cause and prevention of disease.

The chief function of the body is to carry the brain around.

I have friends in overalls whose friendship I would not swap for the favor of the kings of the world.

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.

Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.

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.

Show me a thoroughly satisfied man and I will show you a failure.

I know this world is ruled by infinite intelligence. Everything that surrounds us- everything that exists - proves that there are infinite laws behind it. There can be no denying this fact. It is mathematical in its precision.

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

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

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!

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

Great ideas originate in the muscles.

I find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.

To have a great idea, have a lot of them.

Genius is one percent inspiration and ninety-nine percent perspiration.

Many of life's failures are people who did not realize how close they were to success when they gave up.

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.

To invent, you need a good imagination and a pile of junk.

There is no substitute for hard work.