Philosophy of Religion

Summa Contra Gentiles

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Thomas Aquinas

1259

A sustained argument for the truth of Christianity addressed to non-believers, engaging especially with Islamic and Jewish philosophy. Unique among Aquinas's works in proceeding primarily by rational demonstration rather than scriptural authority, it develops a natural theology — arguments for God's existence, simplicity, and perfection — before turning to the mysteries of faith that exceed unaided reason. A foundational text in the tradition of rational apologetics.