"Restlessness is discontent and discontent is the first necessity of progress. Show me a thoroughly satisfied man and I will show you a failure."

"I owe my success to the fact that I never had a clock in my workroom. Seventy-five of us worked twenty hours every day and slept only four hours — and thrived on it."

"I have never seen a man who was afraid of a woman. I have seen men who were afraid of women's tongues."

"I readily admit that I have been a crank in my life."

"There is no substitute for hard work."