As we have said before, for religious man nature is never only natural. Experience of a radically desacralized nature is a recent discovery; moreover, it is an experience accessible only to a minority in modem societies, especially to scientists. For others, nature still exhibits a charm, a mystery, a majesty in which it is possible to decipher traces of ancient religious values. No modern man, however irreligious, is entirely insensible to the charms of nature. We refer not only to the esthetic, recreational, or hygienic values attributed to nature, but also to a confused and almost indefinable feeling, in which, however, it is possible to recognize the memory of a debased religious experience.