Unlike return, however, risk is no more quantifiable at the end of an investment that it was at its beginning. Risk simply cannot be described by a single number. Intuitively we understand that risk varies from investment to investment: a government bond is not as risky as the stock of a high-technology company. But investments do not provide information about their risks the way food packages provide nutritional data.
Seth KlarmanYou need to balance arrogance and humilitywhen you buy anything, it's an arrogant act. You are saying the markets are gyrating and somebody wants to sell this to me and I know more than everybody else so I am going to stand here and buy it. I am going to pay an 1/8th more than the next guy wants to pay and buy it. That's arrogant. And you need the humility to say 'but I might be wrong.' And you have to do that on everything
Seth KlarmanIf you can remember that stocks aren't pieces of paper that gyrate all the time --they are fractional interests in businesses -- it all makes sense.
Seth Klarman