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

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

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

“I never did a day’s work in my life. It was all fun.”

“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.”

“The three great essentials to achieve anything worthwhile are: hard work, stick-to-itiveness, and common sense.”

“There’s a way to do it better – find it.”

“Success is 1% inspiration and 99% perspiration.”

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

“Your worth consists in what you are and not in what you have.”

“The value of an idea lies in using it.”

“Negative results are just what I want. They’re just as valuable to me as positive results.”

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

“The best thinking has been done in solitude. The worst has been done in turmoil.”

“I start where the last man left off.”

“Restlessness is discontent and discontent is the first necessity of progress.”

“I find out what the world needs. Then I go ahead and try to invent it.”

“Invention is 10% inspiration and 90% perspiration.”

“The most certain way to succeed is always to try just one more time.”

“The successful person makes a habit of doing what the failing person doesn’t like to do.”

“Never get discouraged if you fail. Learn from it. Keep trying.”

“There is no substitute for hard work.”

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

“Everything comes to him who hustles while he waits.”

“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.”