One of the fun things about having a blog is being able to see what kind of internet searches land people on your site. I've had several Google referrals that have resulted from people trying to find out what St. Augustine had to say about Islam. Let me make this simple. St. Augustine of Hippo died in the year 430. Muhammad, the founder of Islam, lived from ca. 570 until 632. St. Augustine never wrote anything about Islam, because Islam didn't exist when St. Augustine was alive.
I note this as a public service to those who use internet search engines.