Thomas also has a some things in his writings that completely undercut the Church's position on abortion.  Of course, those parts of his writings have been ignored in total since Roe v Wade.  Ensoulment questions are no longer germane to the discussion which is why limbo, a poor construct to begin with, went by the wayside under BXVI in favor of ensoulment at birth.  Baptism no longer applies to the heavenly vision.