Summa Theologica - Part I Q32-37: The Knowledge of the Divine Persons - Of the Name of the Holy Ghost -- Love

The Summa Theologica (or the Summa Theologiae or simply the Summa, written 1265–1274) is the most famous work of Thomas Aquinas although it was never finished. It was intended as a manual for beginners as a compilation of all of the main theological teachings of that time. It summarizes the reasonings for almost all points of Christian theology in the West, which, before the Protestant Reformation, subsisted solely in the Roman Catholic Church. The Summa's topics follow a cycle: the existence of God, God's creation, Man, Man's purpose, Christ, the Sacraments, and back to God. (Summary adapted from the Wikipedia)

 32. The Knowledge of the Divine Persons

 33. Of the Person of the Father

 34. Of the Person of the Son

 35. Of the Image

 36. Of the Person of the Holy Ghost

 37. Of the Name of the Holy Ghost---Love