countries, equatorial seas and volcanic regions, so often furnish a theatre, had shaken confidence in the permanence of the physical constitution of the world. Perhaps the numerous political and social revolutions, the frequent successions of peoples, rulers and subjects in turn, had accustomed the mind to conceive and anticipate perpetual changes, of which the successive ages of the world were but the supreme expression; and finally, perhaps that quasi-messianic expectation of the return of Quetzalcoatl, to be accompanied by a complete renewal of things, may have given an additional point of attachment to this belief in the caducity of the whole existing order. What is certain is that this sentiment itself was very widely spread. It served as a consolation to the peoples who were crushed beneath the cruel yoke of the Aztecs. They might well cherish the thought that all this would not last for ever; and even the Aztecs themselves had no unbounded confidence in the stability of their empire. The Spaniards profited greatly by this vague and all but universal distrust. After their victory they made much of pretended prodigies that had shadowed it
