"The value of an idea lies in the using of it."
"I never did a day's work in my life. It was all fun. "
"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. "
"I have not failed. I've just found 10,000 ways that won't work. "
"Restlessness and discontent are the first necessities of progress."
"Genius is one percent inspiration, ninety-nine percent perspiration. "
"There is no expedient to which a man will not go to avoid the labor of thinking. "
"Just because something doesn't do what you planned it to do doesn't mean it's useless. "
"Many of life's failures are people who did not realize how close they were to success when they gave up."
