 Who does not know that kings and dukes had their rulership from those who, not knowing God, strove from blind greed and intolerable presumption to dominate their equals, namely mankind, by pride, rapine, perfidy, murder, and crimes of all sorts, urged on by the ruler of the world, i.e., the devil? (Gregory VII 1081: 552; see also Poole 1920: 201, fn. 5)