Harold Joseph Morowitz was a biophysicist and Robinson Professor in Biology and Natural Philosophy at George Mason University. Born in Poughkeepsie, N.Y., on December 4, 1927, Morowitz graduated from Poughkeepsie High School in 1944. He studied at Yale University starting in 1948 and earned his Ph.D. in 1951. From 1951-1953 he was a physicist at the National Bureau of Standards. Morowitz was on the staff of the National Heart Institute from 1953-1955 before joining the faculty of Yale University in 1955. At Yale, Morowitz was associate professor of biophysics (1960-1968), professor of molecular biophysics and biochemistry (1968-1988), and master of Pierson College (1981-1986). He joined the faculty of George Mason University in 1988 as a Robinson Professor. From 1993 on Morowitz directed the Krasnow Institute for Advanced Study. Dr. Morowitz authored and coauthored several books, including: Life and the Physical Sciences (with Waterman), 1964; Theoretical and Mathematical Biology, 1965; Energy Flow in Biology, 1968; Entropy for Biologists (with Lucille Morowitz), 1970; Life on the Planet Earth, 1974; Ego Niches, 1977; Foundations of Bioenergetics, 1978; The Wine of Life, 1979; Mayonnaise and the Origins of Life, 1985; Cosmic Joy and Local Pain, 1987; The Thermodynamics of Pizza, 1991; Beginnings of Cellular Life (with James Trefil), 1992; The Facts of Life, 1992; and Entropy and the Magic Flute, 1993. Dr. Morowitz passed away on March 22, 2016 in Falls Church, VA.