who is considered to be the most influential writer of all time on medical subjects
Galen Aelius Galenus or Claudius Galenus (/ɡəˈliːnəs/;[1] Greek: Κλαύδιος Γαληνός; September 129 AD – c. 200/c. 216), often Anglicized as Galen and better known as Galen of Pergamon (/ˈɡeɪlən/),[2] was a prominent Greek physician, surgeon and philosopher in the Roman Empire.[3][4][5] Arguably the most accomplished of all medical researchers of antiquity, Galen influenced the development of various scientific disciplines, including anatomy,[6] physiology, pathology,[7] pharmacology,[8] and neurology, as well as philosophy[9] and logic.
William Harvey William Harvey (1 April 1578 â€“ 3 June 1657[2]) was an English physician who made seminal contributions in anatomy and physiology. He was the first known physician to describe completely and in detail the systemic circulation and properties of blood being pumped to the brain and body by the heart, though earlier writers, such as Realdo Colombo, Michael Servetus, and Jacques Dubois, had provided precursors of the theory.[3][4] In 1973 the William Harvey Hospital was constructed in the town of Ashford, a few miles from his birthplace of Folkestone.