The Summa Contra Gentiles (SCG), one of Aquinas's best-known works after the Summa Theologiea, is a philosophical and theological synthesis that examines what can be known of God both by reason and by divine revelation. A detailed expository account of and commentary on this famous work, Davies's book aims to help readers think about the value of the Summa Contra Gentiles for themselves, relating the contents and teachings found in the SCG to those of other works and other thinkers both theological and philosophical. Following a scholarly account of Aquinas's life and his likely intentions in writing the SCG, the volume works systematically through all four books of the text. Presupposing no previous knowledge of Aquinas or of his works, Davies offers the most detailed account and discussion of the SCG available in English in one volume.

Epiphanius of Cyprus was lead bishop of the island from 367 until his death in 403, and he was a contemporary of several of the great church fathers of the patristic era, including Athanasius, Basil, and Jerome. He is well known among modern scholars for his monumental heresiology, the Panarion, as well as for his involvement in several ecclesiastical and theological controversies. Before he began to write his magnum opus, however, he had already completed the Ancoratus, an important theological treatise, written in the form of a letter to Christians in southern Anatolia. The Ancoratus addressed numerous theological issues, particularly in response to the continuous disputes about the divinity of the Son, the developing arguments over the divinity of the Holy Spirit, and the early quarrels over the Incarnation of Christ. In addition, he included his thoughts on proper biblical exegesis, the problematic theology of Origen, and the relationship of the Christian faith with Hellenistic cul

Augustine's monumental work of Christian philosophy contrasts the culture of pagan Rome with his vision of the "Heavenly Jerusalem" of scripture.

"In 1695 John Locke published The Reasonableness of Christianity, an enquiry into the foundations of Christian belief. He did so anonymously, to avoid public involvement in the fiercely partisan religious controversies of the day. In the Reasonableness Locke considered what it was to which all Christians must assent in faith; he argued that the answer could be found by anyone for themselves in the divine revelation of Scripture alone. He maintained that the requirements of Scripture were few and simple, and therefore offered a basis for tolerant agreement among all Christians, and the promise of peace, stability, and security through toleration." "This is the first critical edition of the Reasonableness: for the first time an authoritative annotated text is presented, with full information about sources, variants, amendments, and the publishing history of the work. Also provided in the editorial notes are cross-references, references to other works by Locke, definitions of terms, and o