"Exceptional founders all have the ability to 'keep on keepin' on.' I'm convinced that half of what separates the successful entrepreneurs from the non-successful ones is pure perseverance."
-Steve Jobs, founder of Apple
"Of course, you have to actually start trying before you can succeed. A lot of people have ideas, but there are few who decide to do something about them now. Not tomorrow. Not next week. But today."
-Nolan Bushnell, founder of Atari
"Let your natural curiosity drive you. My biggest motivation? Just to keep challenging myself. I see life almost like one long university education, which I never had."
-Sir Richard Branson, founder of Virgin