 From this genus of poetic metaphysics, Vico then extrapolates the various species of wisdom born of it. “Poetic morals” have their source in piety and shame (“Poetic Wisdom,” §502, p.170), he argues, while “poetic economy” arises from the feral equality of human beings and the family relationships into which they were forced by need (“Poetic Wisdom,” §523, p.180). Similarly, “poetic cosmography” grows from the seeing “the world as composed of gods of the sky, of the underworld...and gods intermediate between earth and sky” (“Poetic Wisdom,” §710, p.269), “poetic astronomy” from raising the gods “to the planets and [assigning] the heroes to the constellations” (“Poetic Wisdom,” §728, p.277), “poetic chronology” out of the cycles of harvest and the seasons (“Poetic Wisdom,” §732, p.279), and “poetic geography” from naming the natural world through “the semblances of things known or near at hand” (“Poetic Wisdom,” §741, p.285). As the faculty of reason develops and grows, however, the power of imagination from which the earliest forms of human society grew weakens and gives way finally to the power of reflection; the cognitive powers of human beings gain ascendance over their creative capacity, and reason replaces poetry as the primary way of understanding the world. This defines the age of men which makes philosophy, Vico reasons, a relatively recent development in history, appearing as it did “some two thousand years after the gentile nations were founded” (Element CV, §313, p.92).