While Buffett has a policy of seldom commenting on stocks he owns--he feels public pronouncements will only lead to the public's expectation of more public pronouncements, and he likes to keep his cards close to his vest--he loves to discuss the principles behind his investments. These come primarily from Ben Graham, under whom Buffett studied at Columbia University and for whom he worked in the 1950s. First among them is the idea that price is what you pay and value is what you get--and if you're a smart investor, the first will always be less than the second. In that sense, the value of the lessons learned from Buffett's Essays could be far greater than the book's price. --Lou Schuler