Excerpt from: “The Spiritual Life. A Treatise on Ascetical and Mystical Theology”, [pg. 98] by The Very Reverend Adolphe Tanquerey, S.S., D.D.
“Our Guardian Angel keeps us in constant touch with heaven. To derive full profit from his guardianship we can do no better than direct our thoughts frequently to our Guardian Angel, making him the object of our veneration, our confidence and our love. a) We venerate him by hailing him as one of those priveleged beings who ever see the face of God and who are to us the representatives of our Heavenly Father. Therefore, we should do nothing that could displease or sadden our Angel; on the contrary, we must strive to give him proof of our respect by emulating his fidelity and loyalty in God’s service. This is, indeed, the most touching way in which [we] can attest our esteem for him. b) We show him our confidence, by bearing in mind the mighty protection he furnishes us and his unfailing goodness towards us, his God-given charges. Since he is a master in foiling the wiles of the devil, we should invoke him especially when we are assailed by this treacherous foe and in all dangerous occasions in which his foresight and his adroitness will be of great help. We should likewise call for his assistance when determining our vocation, for he better than any other will know the providential designs of God in our regard. Finally, in all important affairs with others it is well to address ourselves to their Guardian Angels that these persons may be well-disposed towards the mission we are about to discharge in their behalf. c) We manifest to our Guardian Angel our love by reflecting that he has ever been and is still our devoted friend, ever ready to render us services the extent and import of which we shall realize only in heaven. By faith, however, we can even now understand, though only imperfectly, something of his good offices toward us, and this suffices to call forth our gratitude and our love. When loneliness weighs heavily upon us, let us remember that we are not alone, that near us hovers a friend, devoted and generous, upon whom we can lean and with whom we can hold familiar converse. Let us bear in mind that [by] honoring our Guardian Angel we honor God Himself whom our Angel represents here below, and let us often unite ourselves to him in order to give greater glory to God.”