In Confucian Questions to Augustine, Park compares the works of Confucius and Mencius with those of Saint Augustine. His purpose in so doing is to show Confucian Augustinianism as a new theological perspective on Confucian-Christian ethics and Augustinianism by discovering analogies and differences in their respective understandings of the formation of moral self, particularly the acquisition of virtue, and how they believe this leads to happiness. Using the method of inter-textual reasoning, and assuming continuity between Augustine's early and later works, he compares Confucius and Mencius's xue, si, li, and yue with Augustine's moral learning, contemplation, sacrament, and music, respectively. Confucian Augustinianism shows how to enjoy God, follow Jesus, and live in the Holy Spirit.