Virtue ethics or natural law? Most contemporary accounts treat these as rival approaches. This book argues both are necessary since virtue is commitment to objective human goods. It also argues integrity is planning one's life by commitment to reasonableness, rejects traditional natural law and virtue ethics for more deontological accounts of the human good and virtue, and explains human personhood accordingly. Part 2 then analyzes Aquinas's accounts of emotion, the body and happiness in terms of integrity.