Benjamin Graham (May 8, 1894 – September 21, 1976) is the father of value investing, an investment approach that he began teaching at Columbia Business School in 1928. The British-born American professional investor was well-known for his book Security Analysis which was published in 1934. Together with co-author David Dodd, he refined his investment approach through various editions of the book. Since its publication, the book has been widely treated as an investment bible in the investment community. He had many disciples in his lifetime, among which is Warren Buffett of Berkshire Hathaway. Warren Buffett, hailed widely as the Wizard of Omaha, the Oracle of Omaha or the Sage of Omaha, described Benjamin Graham as the second most influential person in his life after his own father. Warren Buffett said Security Analysis is an investment road map that he has been following. Another of Benjamin Graham’s famous books is Intelligent Investor, described by Warren Buffett as “the best book about investing ever written”. Benjamin Graham’s other well-known disciples include William J. Ruane, Irving Kahn and Walter J. Schloss.