Here is the latest of many, many firmly Catholic websites highly recommending C. S. Lewis books more than Catholic classics! I saw this today under the heading "Spiritual Classics"(specific website to be anonymous).
Confessions of St. Augustine by St. Augustine, Little Talks with God (modernized version of “The Dialogues”) by St. Catherine, City of God by St. Augustine, The Problem of Pain by C. S. Lewis, Dark Night of the Soul by St. John of the Cross, Mere Christianity by C. S. Lewis, The Screwtape Letters by C. S. Lewis, The Everlasting Man by G. K. Chesterton, Orthodoxy by G. K. Chesterton, The Greatest Story Ever Told by Fulton Oursler, Meditations from a Simple Path by Mother Teresa, Interior Castle by St. Teresa of Avila, The Way of Perfection by St. Teresa of Avila, Story of a Soul by St. Therese of Lisieux, My Way of Life/Summa Theologica by St. Thomas Aquinas.
Lewis received 3 recommendations when he is NOT Catholic! More recommendations than Augustine and Aquinas. Why would devout, educated Catholics subtly lead people away from Catholicism into Protestantism. Why?