In the 5th and 4th centuries BC, Hippocrates and the Medical School of Kos distinguished the etiology of diseases from superstition, divine origin and philosophical assumptions, and proposed new values of ethics and deontology ​​for medical practice, introducing the principles of beneficence, non-maleficence, confidentiality and justice. This book examines the timelessness of these values ​​and the humanistic Hippocratic spirit, as opposed to the notion that they are obsolete and fail to apply to contemporary issues of medical ethics.