"Only this I know full well now, and did not know then, that the Catholic Church allows no image of any sort, material or immaterial, no dogmatic symbol, no rite, no sacrament, no Saint, not even the Blessed Virgin herself, to come between the soul and its Creator. It is face to face, 'solus cum solo,' in all matters between man and his God. He alone creates; He alone has redeemed; before His awful eyes we go in death; in the vision of Him is our eternal beatitude....What I can speak of with greater confidence is the effect produced on me a little later by studying the Exercises of St. Ignatius. For here again, in a matter consisting in the purest and most direct acts of religion, -in the intercourse between God and the soul, during a season of recollection, of repentance, of good resolution, of inquiry into vocation, -the soul was 'sola cum solo;' there was no cloud interposed between the creature and the Object of his faith and love. The command practically enforced was, 'My son, give Me thy heart.' The devotions then to Angels and Saints as little interfered with the incommunicable glory of the Eternal, as the love which we bear our friends and relations, our tender human sympathies, are inconsistent with that supreme homage of the heart to the Unseen, which really does but sanctify and exalt, not jealously destroy, what is of earth. At a later date Dr. Russell sent me a large bundle of penny or half-penny books of devotion, of all sorts, as they are found in the booksellers' shops at Rome; and, on looking them over, I was quite astonished to find how different they were from what I had fancied, how little there was in them to which I could really object."
-Ven. John Henry Newman in Apologia Pro Vita Sua.