The "Canon of Medicine" is a comprehensive medical text written by the Persian physician Avicenna in the 11th century. It serves as a foundational work in the field of medicine, combining knowledge from ancient Greek, Roman, and Islamic medical traditions. The text is organized into five books, covering topics such as anatomy, physiology, diagnosis, and treatment of diseases. This influential work was widely used in medical education for centuries, particularly in Europe and the Islamic world. The "Canon of Medicine" established principles of clinical observation and experimentation, significantly shaping the development of modern medicine and medical ethics.