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"Aquinas also wrote the Summa Contrary Gentiles aimed at defending the faith against non Christians, further establishing his role as a bridge between faith and reason. His teaching on natural law, ethics and the nature of God have had a profound influence on Catholic theology and Western philosophy. Aquinas emphasized that God's existence can be understood through reason and observation of the natural world. His work laid the groundwork for later theologians and philosophers, including figures like John Paul II and modern Catholic social teaching."
