In this book, the author uses a selection of twenty-six of his papers in which he sets forth both interbehavioral psychology and Hellenic Greek psychology together with psychological concepts of hunter-gatherers, Egyptians, and Indo-Europeans. Contents: I. Introduction. II. Pre-Greek, Greek, and Indian Psychology. III. Interbehavioral Psychology: General Framework; Special Topics; Studies Concerning the Founder of Interbehavioral Psychology; Tribute; Selected Bibliography.