Based on a collection of interviews with Tobias over a period of six years, on topics such as research into the physical anthropology of living peoples; studies of mammalian chromosomes; an invitation from Louis and Mary Leakey to describe all the hominid fossils they discovered; the identification, description and naming of Homo habilis; re-opening of the Sterkfontein fossil site in 1966; Tobias's political activism and medical ethics; and his personal philosophy concerning religion and evolution.