About David Lipton DAVID R. LIPTON received a PHD in history from the University of Toronto in 1975. He is now pursuing a career in finance. Books by David Lipton Ernst Cassirer The Dilemma of a Liberal Intellectual in Germany, 1914-33 by (author) David Lipton Ernst Cassirer The Dilemma of a Liberal Intellectual in Germany, 1914-33 by (author) David Lipton