Maurice M. Hassett,
Catholic Encyclopedia
(1913)
“ The existence of the custom among pagans is referred to by Clement of Alexandria, who states that their "most ancient temples looked towards the West, that people might be taught to turn to the East when facing the images" (Stromata, vii. 17, 43) . The form of orientation which in the Middle Ages was generally adopted consisted in placing the apse and altar in the Eastern end of the basilica. A system of orientation exactly the opposite of this was adopted in the basilicas of the age of Constantine. ”
