Pride Destroys Union With God
Jesus says: "Pride kills all the virtues, beginning with charity (love). It thus brings with it a loss of God's light (wisdom). The proud do not treat the good Father in Heaven with holy respect; they lack merciful instincts towards their brothers and sisters; they think they are above the weaknesses of the flesh and the rules of the Law. They therefore sin continually, and with the same sin which was the cause of the ruin first of Lucifer and then of Adam and his offspring. But, above all, pride slays charity. It thus destroys union with God."
The source of all goodness and wisdom is God, and this particular message was conveyed through: Maria Valtorta the Notebooks 1943, revelations from Jesus to her, [Pisani/Murray, p.145] (Recommend Bible as primary source and these teachings as supplemental)