CALVIN: A BIOGRAPHY, by Bernard Cottret, published by William B. Eerdmans Publishing Company Grand Rapids, Michigan, copyright 2000.
(page 217) February 13, 1547 - CALVIN WRITES to the man who would preside over the burning of Michael Servetus. In the letter CALVIN WRITES, "For if he [Michael Servetus] came, as far as my authority goes, I would not let him leave alive."