This article presents and compares the similar views of William Glasser, M.D., founder and president of the William Glasser Institute in Los Angeles, and author of scores of best selling books; and William Watson Purkey, Ed.D, co-founder of the International Association for Invitational Education (IAIE), Professor Emeritus at the University of North Carolina at Greensboro, and also a prodigious author. Dr. William Glasser is most famous for his contributions to psychiatry and elementary/secondary school reform. Dr. William Watson Purkey is also best known for his contributions to school reform as well as counselor education. Dr. Purkey and Dr. Glasser have applied their theory and practice equally to classrooms--elementary and secondary as well as to personal therapeutic counseling. They both cite William Powers' (1973) "Behavior-The Control of Perception" as a seminal influence. Dr. Glasser and Dr. Purkey are humanists. They seek, find, encourage and applaud development of the most positive characteristics in people whether the person is a student, a disabled individual, a teacher, a counselor, a parent, a peer, a therapist, a school secretary, a school bus driver, and so on. For both, the key element is creating and maintaining "success." Central to both Glasser and Purkey's views is the development of an individual's self-esteem. (Contains 2 tables.)