"To say that a man is vain means merely that he is pleased with the effect he produces on other people. A conceited man is satisfied with the effect he produces on himself."

"We must stop talking about the American dream and start listening to the dreams of Americans."

"Most women are not as young as they are painted."

"You cannot make a man by standing a sheep on its hind-legs. But by standing a flock of sheep in that position you can make a crowd of men."

"A hatred of failure has always been part of my nature."

"I tend to go for women with common sense. Being down to earth stands out more than looks."

"The care of the Earth is our most ancient and most worthy, and after all our most pleasing responsibility. To cherish what remains of it and to foster its renewal is our only hope."

"Generally, what people tend to underestimate is the cyborg nature of Groupon. We are a company that has the DNA of being both a technology company and a heavily operational company."