Over the course of a career spanning most of the twentieth century, distinguished historian Owsei Temkin has argued passionately for the necessity of chronicling and analyzing the history of medicine. The essays presented in this book span Dr. Temkin's career, bringing together new pieces and many previously unavailable outside the journals in which they were originally published. Here the reader will find new thoughts and ideas that deviate from Dr. Temkin's earlier beliefs and reflect a lifetime of research into the historical and ethical foundations of modern medicine.