Depressing Historical Factoid of the Day

From Magill's Medical Guide:

"Meanwhile, Spanish physician Michael Servetus published a treatise in 1553 describing how circulation of blood to the lungs and back (often called the lesser circulation) might occur. Unfortunately, because he also included religious views, all copies of his writings that could be found were destroyed, and he was burned at the stake. Eventually, in 1694, a copy of his book was found; his circulation theory matched later findings." [6th ed., v. 1, p.369]