The reference in question is from a book of Jewish mysticism called the Kabbalah.
I don't want what I am going to say to be misconstrued in any way as bigotry, for it is not. But there are certain religious traditions that epitomize man's quest to leave no loose ends. These traditions collect scholarly studies, church father rulings, and committee decisions together into quasi-scriptural libraries upon whose weight wars have been waged and families bitterly divided.
While I venerate some of the great thinkers of the past, I believe there will always be a gap between the least of God's revealed wisdom and height of mankind's greatest contemplations. I honor that gap as one of God's imperfect children forgiven and nurtured by his perfect love. I also believe that part of our spiritual journey is not just absorbing truth, but the quest for truth itself. It is the struggle which defines us. I do not believe that God intended anyone to have all the facts presented to them by another. We were meant to explore, designed to ask, built and equipped to discover.
The place of the Church Fathers, the great Rabbis, the sages of old, is to inspire us with their zeal, touch us with their devotion, and when we don't know where to begin with one of life's difficult questions, see what worked for another person in our position. I can not be certain what worked for St. Augustine or Thomas Aquinas would work for me, but I am open to what they say, and I respect them for the diligence and prayer they put into their work.
This said, like many people Jewish and Christian, I give the Kabbalah no credence whatever. We must all make up our own minds on this matter based on our independent observations. I am much more prone to accept Neo Platonic thought than Kabbalistic musings, but that is just me.