Knowra Thomas Aquinas Thomas Aquinas Thomas Aquinas (c. 1225–1274) was a Dominican friar and theologian who integrated Aristotelian philosophy with Christian doctrine. His works became foundational to Catholic theology and philosophy.
Aristotelianism : A philosophical tradition based on Aristotle’s writings about nature, knowledge, ethics, and metaphysics. Aquinas adopted Aristotle’s framework while adapting it to Christian doctrine.
Summa Theologiae : Aquinas’s unfinished systematic work presenting Christian theology through questions, objections, and replies. Its question-and-answer structure makes his method of argument especially visible.
Natural law : A moral order knowable through reason and grounded in human nature and the purposes of creation. Aquinas develops natural law as rational participation in eternal law.
University of Paris : A medieval center of higher learning that became one of Europe’s leading universities. Aquinas studied and taught there amid disputes over Aristotle and the place of theology.
Augustinianism : A medieval Christian intellectual tradition shaped by Augustine’s writings, especially on God, the soul, and divine illumination. Aquinas’s greater reliance on Aristotle distinguishes his synthesis from Augustinian approaches.
Scholasticism : A medieval intellectual method that used structured questions, arguments, and authoritative texts to investigate philosophical and theological problems. Aquinas’s teaching and writing exemplify scholastic methods of inquiry.
Five Ways : Five arguments for God’s existence presented by Aquinas in the Summa Theologiae. They illustrate his use of motion, causation, contingency, gradation, and purpose.
Virtue ethics : An approach to ethics that evaluates character and the virtues needed for human flourishing. Aquinas joins Aristotle’s account of virtue to Christian teaching on grace and humanity’s final end.
Albertus Magnus : A German Dominican philosopher and theologian who wrote extensively on Aristotle and taught Aquinas. As Aquinas’s teacher, Albert helped introduce him to the study of Aristotle.
William of Ockham : A fourteenth-century English Franciscan philosopher and theologian known for nominalism and arguments limiting what reason can establish about God. Ockham’s later account of knowledge and divine power differs sharply from Aquinas’s metaphysical system.
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