I was happier when I was doing a mechanic's job.
Those who believe they can do something and those who believe they can't are both right.
Failure is simply the opportunity to begin again, this time more intelligently.
I do not believe a man can ever leave his business. He ought to think of it by day and dream of it by night.
Be ready to revise any system, scrap any method, abandon any theory, if the success of the job requires it.
Mark my word - A combination airplane and motor car is coming.