The below quote has been attributed to Pope Innocent III but please see http://www.roger-pearse.com/weblog/2017/03/01/burned-without-pity-a-fake-quotation-attributed-to-pope-innocent-iii/comment-page-1/, which shows that this quote has been falsely attributed.
“Anyone who attempts to construe a personal view of God which conflicts with church dogma must be burned without pity.”
~Papal Bull, 1198, qtd. in Peter Tompkins, Symbols of Heresy in THE MAGIC OF OBELISKS, p.57 (New York: Harper, 1981)
Image information: Innocent III marble bas-relief, one of 23 reliefs of great historical lawgivers in the chamber of the U.S. House of Representatives in the United States Capitol. Sculpted by Joseph Kiselewski in 1950. Diameter 28 inches.