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“We cannot live our Christian vocation to the full unless and until the new first principles given by faith pervade even our deliberation about the means. So long as we believe but continue to rely solely on our own natural reason, whether perfected by acquired virtue or not, to guide our acts, then I think we will fall short of the goal of the Christian life. What must we do if we are to discover the divine folly of living our Christian vocation to the full? From the preceding, it seems clear that we will live our Christian vocation to the full to the extent to which it becomes co-natural to us to use the particular principles of the infused moral virtues, rather than the particular principles of the acquired, in our reasoning. Whether and how this occurs, of course, is up to God.”
Infused Virtue and Growth in the Christian Moral Life | Prof. Angela Knobel – YouTube