For us who live in cities Nature is not natural. Nature is supernatural. Just as monks watched and strove to get a glimpse of heaven, so we watch and strive to get a glimpse of earth. It is as if men had cake and wine every day but were sometimes allowed common bread.
Milton says, that the lyric poet may drink wine and live generously, but the epic poet, he who shall sing of the gods, and their descent unto men, must drink water out of a wooden bowl. For poetry is not "Devil's wine," but God's wine.