"I have not failed. I've just found 10,000 ways that won't work."
- Thomas A. Edison
"Many of life's failures are people who did not realize how close they were to success when they gave up."
"When you have exhausted all possibilities, remember this - you haven't."
"The three great essentials to achieve anything worthwhile are, first, hard work; second, stick-to-itiveness; third, common sense."
"If we all did the things we are really capable of doing, we would literally astound ourselves."
"Study, along the lines which the theologies have mapped, will never lead us to discovery of the fundamental facts of our existence. That goal must be attained by means of exact science and can only be..."
"...What I have denied and what my reason compels me to deny, is the existence of a Being throned above us as a god, directing our mundane affairs in detail, regarding us as individuals, punishing us, ..."
"Genius is one percent inspiration, ninety-nine percent perspiration."
"The most necessary task of civilization is to teach people how to think. It should be the primary purpose of our public schools. The mind of a child is naturally active, it develops through exercise. ..."
"To invent, you need a good imagination and a pile of junk."