This book discusses the nature of human persons. This is done mainly within the contexts of conceptions of the nature of human persons by Plato, Sigmund Freud, Karl Marx and Erich Fromm. The book reveals and explains the convergence and divergence between these conceptions.The book considers the distinction between the individual and social dimensions of human nature and argues that the relationship between the two dimensions is symbiotic.It draws attention to the connection between the nature of human persons and the social order. It discusses the implications of the diversity in the elements of human nature and the mutually re-inforcing interface between the individual and social dimensions of human nature for the social order as well as the implications of the neglect and, or, accommodation of these differences and dialogue for human persons and the social order. The book will be of immense benefits to researchers, teachers, students, social workers and the general public.