The whole immanent/transcendent thing can be said to be an interesting core theme for Superman. I remember Elliot Maggin exploring it first (that I know) in the comics.
One of my favorite Superman comics had a depowered Kryptonian doppelganger demanding that Superman relinquish to him his Clark Kent identity. He said that Clark had a great life: an important job, friends, etc. while Superman could be whoever he wanted. But Supes replied being Clark was being him too, and every bit as part of his identity as Superman was.
I do not remember if Cary Bates wrote that one.
That is something I can see Henry stating, in a scene precisely about the reestablishment of the CK identity in the wake of his supposed death.