Then the soul, so divested of its every wish and clothed with the will of God, is very pleasing to God. Like an unbridled horse, it runs most swiftly from grace to grace, from virtue to virtue; for it has no bridle that holds or prevents it from running, since it has severed from itself every inordinate appetite and impulse of its self-will, which are bands and bridles that do not allow the souls of spiritual men to run.
–Saint Catherine of Siena (1347-1380)