Summa Theologica. Part 1; Question 1: The nature and extent of sacred doctrine, Article 1; Whether, besides philosophy, any further doctrine is required?
Summa Theologica. Part 1; Question 2: The existence of God, Article 3; Whether God exists?
Summa Theologica. Part 1; Question 2: The nature and extent of sacred doctrine., Article 8; Is it a matter of argument?
Summa Theologica. Part 1; Question 16: The nature and extent of sacred doctrine., Article 5; Whether God is truth?
