Thomas Aquinas (c. 1225–1274) was an Italian Dominican friar, philosopher, and theologian, known as the Doctor Angelicus. His Summa Theologiae is the foremost systematic work of medieval scholastic theology, integrating Aristotelian philosophy with Catholic doctrine across questions of God, creation, ethics, and law. He was declared a Doctor of the Church in 1568 and remains the preeminent authority in Thomistic philosophy.
