When was the best time to see India? At what period would the study of the Brazilian savages have afforded the purest satisfaction, and revealed them in their least adulterated state? Would it have been better to arrive in Rio in the eighteenth century with Bougainville, or in the sixteenth with Lery and Thevet? For every five years I move back in time, I am able to save a custom, gain a ceremony or share in another belief. But I know the texts too well not to realize that, by going back a century, I am at the same time forgoing data and lines of inquiry which would offer intellectual enrichment. And so I am caught within a circle from which there is no escape: the less human societies were able to communicate with each other and therefore to corrupt each other through contact, the less their respective emissaries were able to perceive the wealth and significance of their diversity. In short, I have only two possibilities: either I can be like some traveller of the olden days, who was faced with a stupendous spectacle, all, or almost all, of which eluded him, or worse still, filled him with scorn and disgust; or I can be a modern traveller chasing after the vestiges of a vanished reality. I lose on both counts, and more seriously than may at first appear, for, while I complain of being able to glimpse no more than the shadow of the past, I may be insensitive to reality as it is taking shape at this very moment, since I have not reached the stage of development at which I would be capable of perceiving it. A few hundred years hence, in this same place, another traveller, as despairing as myself, will mourn the disappearance of what I might have seen, but failed to see. I am subject to a double infirmity: all that I perceive offends me, and I constantly reproach myself for not seeing as much as I should.