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

"If I find 10,000 ways something won't work, I haven't failed. I am not discouraged, because every wrong attempt discarded is another step forward."

"There is no expedient to which a man will not go to avoid the labor of thinking."

"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."

"All Bibles are man-made."

"'Virtual Reality' is a name being slapped on almost anything these days, especially if it's lame."

"A bore is a fellow talking who can change the subject back to his topic of conversation faster than you can change it back to yours."

"Pain is temporary, quitting lasts forever."

"If one is master of one thing and understands one thing well, one has at the same time, insight into and understanding of many things."

"The average man's judgement is so poor, he runs a risk every time he uses it."

"I just need enough to tide me over until I need more."