The Summa Theologica

The Summa Theologica is a comprehensive work of theology written by St. Thomas Aquinas in the 13th century. It systematically addresses questions about God, morality, and human nature, combining Christian teachings with philosophical reasoning. The text is organized into three main parts: the existence and nature of God, the moral law and virtues, and Christ's role in salvation. Aquinas uses a question-and-answer format, anticipating objections and providing thorough explanations. Its influence has shaped Christian thought and ethics, making it a cornerstone of Catholic theology and a significant work in philosophy and moral philosophy.