Bert Gordijn and Ruth Chadwick: Introduction Part One: Medical Enhancement I. Urban Wiesing: The History of Medical Enhancement: from Restitutio ad Integrum to Transformatio ad Optimum? II. Ruth Chadwick: Therapy, Enhancement and Improvement III. Kevin FitzGerald, SJ: Medical Enhancement: A Destination of Technological, Not Human, Betterment IV. Nicholas Agar: How to Defend Genetic Enhancement Part Two: Posthumanity V. Andy Miah: A Critical History...