D. and . Blokhintsev (1908-1979) - an outstanding physicist with an encyclopedic breadth of interests , author of numerous monographs and a classical textbook on quantum mechanics , Scientific Director of the World's First Nuclear Power Plant , organizer and first director of the Joint Institute for Nuclear Research in Dubna , Hero of Socialist Labor , Knight of many higher orders of the USSR , Laureate of the Lenin and State Prizes of the USSR , Corresponding Member of the Academy of Sciences of the USSR and member of a number of foreign academies. The first volume publishes a brief account of the scientific and social activities of D. and . Blokhintseva, an extended abstract of scientific papers, compiled by the author himself, articles on optics, solid state physics, acoustics and nuclear energy . In addition, it includes autobiographical materials, the main dates of life and activity, a complete bibliography of works, as well as the memories of those who were lucky enough to work and communicate with Dmitry Ivanovich. In the second volume of selected works D. and . Blokhintsev included works on fundamental issues of quantum mechanics, quantum field theory and elementary particle theory, as well as speeches on general issues of science. The book is designed for researchers - theoretical physicists, nuclear energy specialists, graduate students and senior students of universities .