
On this date, 27 October 1553, Michael Servetus, physician and theologian, was burned at the stake in Geneva, Switzerland, for the crime of rejecting the doctrine of the Trinity. He was the first European to describe pulmonary circulation. The description, unnoticed by any of the heretic hunters who examined Servetus’ works, was hidden in the book that Calvin ordered to be burned along with Servetus himself.
A useful summary of Servetus’ life, works, and death, as well as a list of his works, can be found at the Michael Servetus Institute web site. Fuller descriptions of Servetus’ life, works, trial, and execution can be found in Lawrence and Nancy Goldstone, Out of the Flames: The Remarkable Story of a Fearless Scholar, a Fatal Heresy, and One of the Rarest Books in the World, or Roland H. Bainton, Hunted Heretic: The Life and Death of Michael Servetus, 1511-1553.