We must also observe closely points of this kind,that even the secondary effects of Nature's processes possess a sort of grace and attraction […]Such a man also will feel no less pleasure in looking at the actual jaws of wild beasts than at the imitations which painters and sculptors exhibit,and he will be enabled to see in an old woman or an old man a kind of freshness and bloom, and to look upon the charms of his own boy slaves with sober eyes.And many such experiences there will be, not convincing to every one but occurring to him and to him alone who has become genuinely familiar with Nature and her works.