Believe in what? It is a circular argument, like “proof texting”. It is similar to fides quereas intellectum. Faith in what?
What you report of what Adler says is the basic Catholic line. He may have been an agnostic, but he was a pretty Aristotelian one, and it's down the middle Aristotle/Aquinas to think we can prove that there is a Flying Spaghetti Monster, aka "The Great Hoo-Hoo in the Sky", but we can't known much about Him except by His self-disclosure.
But back to your response:
Do you believe your parents love(d) you? Do you believe it is generally a good thing for parents to love their children? Do you believe your opinion about what's good or not matters? Do you believe that "matters" in that sense, refers to anything that is true or is in anyway meaningful, or is or should be meaningful to anyone else?
Do you believe that the arguments and questions rolling around inside your head bear any relationship to reality?
If you believe they do, then the implications might bear some examining.
” I was not presenting an argument, so I don’t see how what I presented could be a circular argument.”
I apologize. It would appear we were talking past each other. I was not responding to an argument, just an observation concerning the two phrases.