The rightful suppression of heresy

...if any treatise composed by Arius should be discovered, let it be consigned to the flames, in order that not only his depraved doctrine may be suppressed, but also that no memorial of him may be by any means left. This therefore I decree, that if any one shall be detected in concealing a book compiled by Arius, and shall not instantly bring it forward and burn it, the penalty for this offense shall be death; for immediately after conviction the criminal shall suffer capital punishment.
St. Constantine the Great