Certain portions of the earth, escaping utter destruction, become the seedbeds for replenishing the human race, and so it happens that on a world that is not young there are young populations having no culture, whose traditions were swept away in a debacle; they wander over the earth and gradually put aside the roughness of a nomadic existence and by natural inclunation submit to communities and associations; their mode of living is at first simple, knowking no guile and strange to cunning, called in its early stage the Golden Age. [16] The more these populations progress in civilization and employment of the arts, the more easily does the spirit of rivalry creep in, at first commendable but imperceptibly changing to envy; this, then, is responsible for all the tribulations that the race suffers in subsequent ages. So much for the vicissitudes that civilizations experience, of perishing and arising again, as the world goes on unchanged.[Chapter X - 15,16]