Myths Transformed; HoME 12
He (
Manwe)must have grasped with great clarity what even we may perceive dimly: that it was the essential mode of the process of 'history' in Arda that
evil should constantly arise, and that out of it new good should constantly come. One especial aspect of this is the strange way in which the evils of the Marrer, or his inheritors, are turned into
weapons against evil. If we consider the situation after the escape of
Morgoth and the reestablishment of his abode in
Middle-earth, we shall see that the heroic
Noldor were the best possible
weapon with which to keep Morgoth at bay, virtually besieged, and at any rate fully occupied, on the northern fringe of Middle-earth, without provoking himto a frenzy of nihilistic destruction. And in the meanwhile,
Men, or the best elements in Mankind, shaking off his shadow, came into contact with a people who had actually seen and experienced
the Blessed Realm.
In their association with the warring Eldar Men were raised
to their fullest achievable stature, and by the two marriages the transference to them, or infusion into Mankind, of the noblest Elf-strain was accomplished, in readiness for the still distant, but inevitably approaching, days when the
Elves would 'fade'.