If I worship the image of the Cross, made of whatever wood it may be, shall I not worship the image which shows me the Crucified and my salvation through the Cross? Oh, inhumanity of man! It is evident that I do not worship matter, for supposing the Cross, if it be made of wood, should fall to pieces, I should throw them into the fire, and the same with images.
St. John Damascene
Apology Against Those Who Decry Holy Images
Part II