Thomas Edison

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

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

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

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

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

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

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

"There's a way to do it better. Find it."

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

"Restlessness is discontent, and discontent is the first necessity of progress."

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

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

"There is no substitute for hard work."

"Being busy does not always mean real work. The object of all work is production or accomplishment."