Advice learned from Commodore Vanderbilt
John Steele Gordon. Author, "An Empire of Wealth: The Epic History of American Economic Power"
Commodore Vanderbilt's advice to a young, earnest reporter was, "Don't buy anything you don't want or sell anything you ain't got." Vanderbilt was warning against speculation; he followed his own advice and died the richest self-made man in the world.
Money doesn't make you happy
Craig Newmark. Founder, Craigslist
Material stuff won't make you happy was the message Newmark was taught at Hebrew school as a child. Now Newmark is happy with a tiny fraction of the wealth he could have.