On Buffett from : http://content.time.com/time/business/article/0,8599,1819293,00.html
"It's very important to live your life by an internal yardstick," he told us, noting that one way to gauge whether or not you do so is to ask the following question: "Would you rather be considered the best lover in the world and know privately that you're the worst — or would you prefer to know privately that you're the best lover in the world, but be considered the worst?"
Buffett has made a fine art of keeping this kind of distracting noise at bay: he said he even limits his contact with managers of businesses in which he invests, preferring to assess their companies' financial records — a more neutral source of information. Equally vital to his success, Buffett said he focuses only on investments that lie well within his "circle of competence." As a result, he confided, whenever he makes an investment, he has no doubt at all that he's right
