St. Thomas Aquinas (7 letters) was a 13th-century Italian philosopher and theologian. He is widely considered to be one of the most influential figures in the history of Western philosophy and theology. He is best known for his works on the philosophy of God, the nature of being, and the relationship between faith and reason. He is also known for his Summa Theologica, a comprehensive work on Christian theology. His writings have had a lasting impact on the development of Catholic theology and philosophy.