"Let me give you an example. If you wish to guide a young man on the path of true culture, beware of interrupting his naive, confident, and, as it were, immediate and personal relationship with nature. The woods, the rocks, the winds, the vulture, the flowers, the butterfly, the meads, the mountain slopes, must all speak to him in their own language; in them he must, as it were, come to know himself again in countless reflections and images, in a variegated round of changing visions; and in this way he will unconsciously and gradually feel the metaphysical unity of all things in the great image of nature, and at the same time tranquillise his soul in the contemplation of her eternal endurance and necessity. But how many young men should be permitted to grow up in such close and almost personal proximity to nature! The others must learn another truth betimes: how to subdue nature to themselves. Here is an end of this naive metaphysics; and the physiology of plants and animals, geology, inorganic chemistry, force their devotees to view nature from an altogether different standpoint. What is lost by this new point of view is not only a poetical phantasmagoria, but the instinctive, true, and unique point of view, instead of which we have shrewd and clever calculations, and, so to speak, overreachings of nature. Thus to the truly cultured man is vouchsafed the inestimable benefit of being able to remain faithful, without a break, to the contemplative instincts of his childhood, and so to attain to a calmness, unity, consistency, and harmony which can never be even thought of by a man who is compelled to fight in the struggle for existence.