"His genius he was quite content in one brief sentence to define; Of inspiration one percent, of perspiration, ninety nine."

"What you are will show in what you do."

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

"The best thinking has been done in solitude. The worst has been done in turmoil."

"What a man's mind can create, man's character can control."

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

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

"Hell, there are no rules here - we're trying to accomplish something."

"Religion is all bunk."

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

"One might think that the money value of an invention constitutes its reward to the man who loves his work. But... I continue to find my greatest pleasure, and so my reward, in the work that precedes what the world calls success."

"Discontent is the first necessity of progress."

"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 body is a community made up of its innumerable cells or inhabitants."

"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."

"When I have fully decided that a result is worth getting I go ahead of it and make trial after trial until it comes."

"There is no substitute for hard work."

"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 value of an idea lies in the using of it."

"Restlessness is discontent and discontent is the first necessity of progress. Show me a thoroughly satisfied man and I will show you a failure."

"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."

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

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

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

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

"Maturity is often more absurd than youth and very frequently is most unjust to youth."

"There is far more opportunity than there is ability."

"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."

"Your worth consists in what you are and not in what you have."

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

"They say President Wilson has blundered. Perhaps he has, but I notice he usually blunders forward."

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

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

"Non-violence leads to the highest ethics, which is the goal of all evolution. Until we stop harming all other living beings, we are still savages."

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

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

"Nearly every man who develops an idea works it up to the point where it looks impossible, and then he gets discouraged. That's not the place to become discouraged."

"Great ideas originate in the muscles."

"There is no expedient to which a man will not go to avoid the labor of thinking."

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

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

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

"It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work."

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

"I start where the last man left off."

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