I find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.

The secret to success is to make your vocation your vacation.

Success is based on imagination plus ambition and the will to work.

The First 40 hours of work per week are for survival. Everything after that is for success.

My success is due more to my ability to work continuously on one thing without stopping than to any other single quality.

I never took a day off in my twenties. Not one. And I'm still fanatical, but now I'm a little less fanatical.