Scholasticism: A method of learning and philosophical inquiry that was dominant in medieval Europe, characterized by the use of reason and logic to analyze and reconcile Christian doctrine with classical philosophy.
Natural Theology:The branch of theology that seeks to prove the existence of God and divine attributes through reason and observation of the natural world, rather than through revelation or scripture.
Thomism: The philosophical and theological system based on the teachings of Thomas Aquinas, which emphasizes the use of reason and logic to understand and defend Christian doctrine.