In this book of reminiscences, this prize-winning Russian physicist presents a sweeping discourse on scientific achievement from the thirties to the present day. On the basis of his own work and that of leading international scientists such as P. L. Kapitza, L. Landau, R. Feynman and J. Bardeen, the author recounts the establishment and development of the superfluidity of liquid helium and quantum hydrodynamics. In an interesting and readable style, E. L. Andronikashvili speaks of the scientific quest and the human interrelationships that accompany scientific creativity. For historians of science and physicists.