RogueSemicolon:
I hadn’t found any mention of a dissertation except the one he wrote for his PhD in Philosophy, “Thomas Aquinas on Natural Law and the Twofold End of Humanity.” Is this the one you mean?
Yes, the Twofold End is how we have a
(1) Natural end (to inquire/naturally ask about God, via philosophy) and
(2) a Supernatural end (to seek God in afterlife via Sacraments, etc).
The two are related but distinct. De Lubac said they’re the same, hence believed anything we do in this life fulfills our supernatural end. So going to yoga class or Pagan ceremony would do as much for me getting to heaven as going to Mass. Also reason people saying “reasonable hope all men be saved” = if everything everyone does moves them towards heaven , why wouldn’t everyone be saved? Essentially deletes concept of sin.