Tolkien:

“Certainly there was an Eden on this very unhappy earth. We all long for it, and we are constantly glimpsing it: our whole nature at its best and least corrupted, its gentlest and most humane, is still soaked with the sense of 'exile'…”

“…As far as we can go back the nobler pan of the human mind is filled with the thoughts of sibb, peace and goodwill, and with the thought of its loss.

We shall never recover it, for that is not the way of repentance, which works spirally and not in a closed circle; we may recover something like it, but on a higher plane. Just as (to compare a small thing) the convened urban gets more out of the country than the mere yokel, but he cannot become a real landsman, he is both more and in a way less.”