Chapter 26 — Part III — The Ten Commandments
Section 521. Q. Is the use of holy icons agreeable to the second commandment? A. It would then, and then only, be otherwise, if any one were to make gods of them; but it is not in the least contrary to this commandment to honor icons as sacred representations, and to use them for the religious remembrance of God's works and of his saints; for when thus used icons are books, written with the forms of persons and things instead of letters. (See Greg. Magn. lib. ix. Ep. 9, ad Seren. Episc.)