The beginning of Tisza's career, 1925-1937; recollections and comments from his two-year stay at Kharkov with Lev Landau. Discussion of important work in low temperature physics, 1938-1952, especially superfluidity; recollections of Fritz London. Discussion of work in the 1950s in thermodynamics and statistical mechanics; involvement with the philosophy of physics; his recent work in applying algebraic methods to problems in particle physics.