John Bogle, founder of Vanguard:
MarketWatch.com Story
gem:
"There are people saying 'That's not enough to reach my retirement goals, I have to do something to earn more.' That's like saying 'I lost the first seven races, so I am betting everything I have on a longshot in the eighth.' Feel free to do it, but know that there's about one chance in 40 of it doing what you want and paying out. That leaves the 39 other chances to worry about."