Yasunori Fujii received his PhD on the analogy between the strong interaction and the electromagnetic interaction, from Nagoya University in 1959. Between 1963 and 1992 he did research on the theory of particle physics and gravity, including pioneering work on the idea of non-Newtonian gravity, at the Institute of Physics, University of Tokyo. During this period, he also spent two years at Stanford University and a year at Purdue University. He is currently emeritus professor at the University of Tokyo-Komaba and continues to pursue his research interests at the Nihon Fukushi University.