The Hippocratic Oath is an oath, which each and every doctor has to take, when they graduate from a Medical College. The Oath is historically taken by physicians and other healthcare professionals swearing to practice medicine honestly. It is widely believed to have been written either by Hippocrates, often regarded as the father of western medicine, or by one of his students.
Hippocrates (c. 460 BC – c. 370 BC) was an ancient Greek physician and is considered one of the most outstanding figures in the history of medicine. He is referred to as the father of western medicine in recognition of his lasting contributions to the field as the founder of the Hippocratic School of Medicine. This intellectual school revolutionized medicine in ancient Greece, establishing it as a discipline distinct from other fields that it had traditionally been associated with (notably theurgy and philosophy), thus establishing medicine as a profession.
A 12th-century Byzantine manuscript of the Oath.
The Oath has been modified multiple times, in several different countries. One of the most significant revisions is the Declaration of Geneva, first drafted in 1948 by the World Medical Association; it has since been revised several times. While there is currently no legal obligation for medical students to swear an oath upon graduating, 98% of American medical students swear some form of oath, while only 50% of British medical students do.
English translation ( One version)
I swear by Apollo, the healer, Asclepius, Hygieia, and Panacea, and I take to witness all the gods, all the goddesses, to keep according to my ability and my judgment, the following Oath and agreement: