"To put it in a nutshell, the Central and South American high cultures of antiquity were entirely worthy of comparison with what the Old World had achieved by the time of the Han, the Gupta, and the Hellenistic age. The fact is that the Amerindian high cultures were a human modality of their own, and those Spaniards who came among them first would have had the sensation, if they had ever heard of such literature, of treading in a world of imaginative science fiction. But it was real, and the Amerindian achievements deserve all our sympathy and praise."