E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Galen (g hard).
Galen says Nay, and Hippocrats Yea. The doctors disagree, and who is to decide? Galen was a physician of Asia Minor in the second Christian century. Hippocratsa native of Cos, born B.C. 460was the most celebrated physician of antiquity.
Galen. A generic name for an apothecary. Galenists prefer drugs (called Galenical medicines), Paracelsians use mineral medicimes.