Here is a powerful and beloved quote from the Summa Theologica:
"It was necessary for man's salvation that there should be a knowledge revealed by God, besides the philosophical sciences built up by human reason."
— St. Thomas Aquinas, Summa Theologica, I, Q. 1, Art. 1
This is Aquinas at his finest — not dismissing reason, but showing its limits. Unaided reason can point toward God, but it cannot, on its own, reveal the Trinity, the Incarnation, or the path of salvation. Faith and reason are not enemies; they are partners, with revelation completing what philosophy begins.
The Summa Theologica offers a comprehensive framework for understanding the Christian faith and moral life, with tight philosophical reasoning throughout — rooted in Aquinas's synthesis of Christian theology with Aristotelian philosophy, known as Thomism.
Aquinas wrote for beginners in theology, yet produced one of the deepest works in human history — a sign that truth, when presented clearly, is accessible to all.
What does this quote stir in you — does it raise questions about where reason ends and faith must begin in your own life?