 Galen

Aelius Galenus or Claudius Galenus (; September 129 AD – /), often Anglicized as Galen and better known as Galen of Pergamon (), was a physician, surgeon and philosopher in the Roman Empire.He is considered one of the most accomplished of all medical researchers of antiquity, Galen influenced the development of various scientific disciplines, including anatomy, physiology, pathology, pharmacology, and neurology, as well as philosophy and logic.