I never did anything worth doing by accident, nor did any of my inventions come by accident

Hell, there are no rules here - we're trying to accomplish something.

Just because something doesn't do what you planned it to do doesn't mean it's useless.

His genius he was quite content in one brief sentence to define; Of inspiration one percent, of perspiration, ninety nine.

Nearly every man who develops an idea works it up to the point where it looks impossible, and then he gets discouraged. That's not the place to become discouraged.

I never did a day's work in my life. It was all fun.