OTWO, has that phrase been used in the lit before?
No, nothing I wrote is from the literature. But they do write that the heart is treacherous, indicating that we should not trust our own reasoning.
I agree fully with WTW:
And, if Satan is the father of fully integrated thinking, then Jehovah is the true enemy and Satan our would-be Savior #1. Of note, Jesus also preached permissive human reasoning, or fully integrated thinking, before Paul corrupted his message--and is would-be Savior #2.