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Benjamin Graham is widely acknowledged to be the father of modern security analysis. The founder of the value school of investing and founder and former president of the Graham-Newman corporation investment fund, he taught at Columbia University's Graduate School of Business from 1928 through 1957. Graham popularized the examination of price-to-earnings (P/E) ratios, debt-to-equity ratios, divident records, book values, and earnings growth, and he also wrote the popular investors' guide The Intelligent Investor. David Dodd was a colleague of Benjamin Graham's at Columbia University, where he was an assistant professor of finance.