The Trusted Doctor: Medical Ethics and Professionalism rejects the well-entrenched views of medical ethics as everyday ethics or common morality applied to medicine. This chapter lays the foundation for the original account of medical ethics that follows in the book’s succeeding chapters. By presenting vivid examples and general arguments the author demonstrates ways in which the ethics of medicine is distinct and different from common morality. The chapter discusses the most popular common morality views, namely, the four principles approach expounded by Tom Beauchamp and James Childress in Principles of Biomedical Ethics and the ten rules approach presented by Bernard Gert, Charles Culver, and K. Danner Clouser in Bioethics: A Systematic Approach by presenting arguments that challenge their applicability to medical practice. A chart identifies some stark differences between the common morality approach and good medical practice and shows how everyday ethics is incompatible with medical professionalism.