One of history's most influential philosophers and theologians, Thomas Aquinas was the father of modern philosophy of religion, and is infamous for his proofs for God's existence. In this cogent introduction to his work, Edward Feser argues that you cannot fully understand Aquinas' philosophy without his theology and vice-versa. Covering his thoughts on the soul, natural law, metaphysics, and the interaction of faith and reason, this is an essential introduction to the great thinker.