“On Holy Images” is a book about why it’s not automatically idolatry to have images around — written by a Christian guy living under a Muslim ruler in conquered Damascus, and during the time that Iconoclasts controlled the Byzantine Empire (including the Emperor). St. John Damascene maintains stoutly that images of holy things are not only helpful, but were built into God’s plan by God Himself.
Yep, there’s some interesting stuff here!
Btw, archive.org also includes a couple of sermons by Fr. Seraphim Beshoner from last year on what St. John Damascene had to say about the Sign of the Cross, and about Jesus’ descent into Sheol to preach to the Patriarchs. (Chewy Eastern Catholic goodness!)