Hippocrates is often referred to as the Father of Medicine. He was an ancient Greek physician who lived around the 5th century BCE and is credited with laying the foundations of medicine as a rational and scientific discipline. Hippocrates is best known for the Hippocratic Corpus, a collection of texts that emphasize clinical observation and the ethical practice of medicine. The Hippocratic Oath, attributed to him, outlines principles of medical ethics that are still relevant today. His emphasis on the natural causes of illness challenged prevailing superstitions, making a lasting impact on the practice of medicine.