Thomas Aquinas had followed Aristotle to this point, adding that obedience to the law’s commands could help habituate us to virtue; but he still recognized that habituation alone is not enough without “infusion.” The Holy Spirit infuses the theological virtues of faith, hope and love, which go beyond any natural potential, but he also infuses habits that strengthen already existing habits.[14] In effect he frees us to be good. Grace does what human nature alone cannot, not grace instead of natural processes, however, but grace working in and through natural processes to the ends our Creator
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