Summa Theologica, (Prima Pars) is a book by Thomas Aquinas, first published in the 13th century (completed around 1273). In this foundational work of Christian theology and scholastic philosophy, Aquinas embarks on an ordered enquiry into sacred doctrine: exploring the nature and existence of God, the mystery of the Trinity, the creation of the universe, angelic beings, the human soul, and the governance of creatures. His method is rigorous, structured, and dialectical—each question addresses objections, presents a central reply, and then responds to counterarguments. Aquinas was a Dominican friar and one of the great minds of the medieval period, and his Summa Theologiae has come to be one of the most influential works in Western Christian thought. The Prima Pars, in particular, lays the metaphysical and theological groundwork upon which his later moral and Christological theology builds. As a compendium of medieval Christian philosophy and theology, it has shaped the teaching of Catholic doctrine, philosophical theology, and the development of natural theology down through centuries. Its influence extends beyond strictly theological study: it has informed Christian philosophers, theologians, educators, and students exploring the interface of faith and reason. For readers seeking to engage deeply with Christian theology, medieval philosophy, or the intellectual tradition of the Church, this edition of Summa Theologica, (Prima Pars) offers a carefully structured entry into its grand vision. It is suitable for those doing serious theological study, academic research, or seeking to understand the philosophical foundations behind doctrines of God, creation, and the spiritual realm. This translation by Laurence Shapcote (the Fathers of the English Dominican Province), was first published in 1911.
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