The present article treats the life and works of Thomas Aquinas and his reception within the scholastic traditions up to 1879 (Aeterni patris). The first two sections introduce the life and works of Thomas Aquinas, with a particular focus on the Scriptum and the Summa theologiae. The third section treats Thomas's reception up through 1500, looking at the initial period of condemnation in the late thirteenth century. This is followed by his canonization and acceptance as a theological authority in the fourteenth century and the gradual development of the Thomist schools of the fifteenth century. The fourth and fifth sections examine the reception of Thomas's thought in the era of Church reform and the baroque period (1500–1650), and from 1650 until Aeterni Patris (1879) respectively.