Galen, on the Physician as Philosopher

Claudius Galenus (Kλάυδιος Γαληνός, 129-216 CE) was a Greek physician and philosopher who was born in Pergamum (now Bergama, Turkey). He traveled widely, to Smyrna, Corinth, Crete, Cyprus, and Alexandria, before becoming physician and surgeon to the gladiators in Pergamum (from 158-161 CE) and settling in Rome (in 161-162 CE), where he eventually became court physician to the Roman emperors Marcus Aurelius (161-180 CE), Commodus (180-192 CE), and Septimius Severus (193-211 CE). He died in Sicily in 216 CE.

      Galen combined the practice of medicine and philosophy, and he wrote an essay entitled Ὅτι Ἄριστος Ἰατρός καὶ Φιλόσοφος  ("That the best physician is also a philosopher"). In this essay, he argues that a physician must be practiced in logic in order to discover the nature of the body, as well as to know the differences between diseases and the indications for treatment. A physician must also be practiced in ethics in order to best serve his patient's best interests, rather than his own personal interests or financial gain. A physician must therefore know all the parts of philosophy: the logical, the scientific, and the ethical. If a physician doesn't put his own wealth before his moral virtue, then he won't put his own financial gain before his patient's benefit. If a physician despises money and practices temperance, then he will possess all the other moral virtues as well, since they all go together. Galen therefore asks: What grounds are left for any doctor not to be a philosopher?

      While Galen rightly explains that the pursuit of financial gain may be a corrupting influence on a physician and on the practice of medicine, some of the obvious defects in his argument that the best physician is also a philosopher include: (1) logic doesn't necessarily yield understanding of the physical nature of the body (although it may serve to promote consistency in thinking about the physical nature of the body), (2) he doesn't recognize ignorance as a cause of wrong actions on the part of a physician, (3) greed and intemperance aren't the only possible sources of wrong actions. Other vices, such as arrogance, carelessness, indifference, and bigotry may also act as sources of wrong actions, (4) possession of one moral virtue (at one moment or in one situation) doesn't necessarily guarantee possession of all the other moral virtues (at some other time or in some other situation), and (5) philosophy includes not only "the logical, the scientific, and the ethical," but also the metaphysical, the epistemological, the aesthetic, and the political, as well as other fields or domains.