To invent, you need a good imagination and a pile of junk. - Thomas A. Edison

"The three great essentials to achieve anything worthwhile are, first, hard work; second, stick-to-itiveness; third, common sense."

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

"The three great essentials to achieve anything worthwhile are, first, hard work; second, stick-to-itiveness; third, common sense."

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

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