While it may be true that Rahner didn't change the language enough to warrant error or heresy in the Enchridion, the problem of who he was ought to give Catholics pause regarding the overall trajectory of Rahner's goals when he translates Catholic teaching. Gradual apostasy wrought by enemies of truth, of which, Karl Rahner was one, is an insidious business. We can be sure the ill effects of even the smallest changes will ultimately be exposed, probably too late for most. Still, when the general population tolerates or even praises such a man, and Catholics merely shrug, the rest of us can know how deeply that apostasy has embedded itself.
Thomas Sheehan New York Review of Books Feb 4, 1982 Edition
"Karl Rahner, who will be seventy-eight years old in March, is, I think, the most brilliant Catholic theologian since Thomas Aquinas. During the last forty years this German Jesuit priest has almost singlehandedly revolutionized the way the Church understands its message, and he has contributed the lion’s share to reshaping Catholic philosophy outside the narrow limits of official Neo-Thomism."
In any event, Leo XIII's quote promoted in recent threads as proof that Scripture's author never intended to impart truth about earthly cosmology, is outrageous.