It lies in the very nature
of intelligent beings that they function as amphibians able to operate conjointly and concurrently both in the
realm of concrete experience and in that
of abstract thought.
Man as we know him today, man
of metaphysics,
of abstract thought, the creator
of his own environment, the space - traveller, the moulder
of himself, the man
of God and
of grace and
of the promise
of eternal life, precisely this man who is radically distinct from any animal and who at the moment
of man's origin, though perhaps very slowly, took a path which led him so far away from all that is merely animal, yet in such a fashion that he carried with him the whole inheritance
of his biological pre-history into these
realms of his existence remote from the animals, was there when man began to exist.18 And what now is historically and externally manifest, was then present as a task and as an active potentiality.