GALEN (129 A.D.-199 A.D.) was a Greek born in Pergamon, Asia Minor in 129 A.D. He began his medical studies at the age of seventeen, but at the age of 33 went to Rome. He became one of the most famous physicians of all time. For 14 centuries his medical books were considered the most authoritative. He was an original thinker, and much of his work on anatomy, physiology and medicine merits admiration from an historical perspective.