In order to know with a little certainty something of ancient history, there is only one means, it is to see if any incontestable records remain. We have only three in writing: the first is the collection of astronomical observations made for nineteen hundred consecutive years at Babylon, sent by Alexander to Greece. This series of observations, which goes back to two thousand two hundred and thirty-four years before our era, proves invincibly that the Babylonians existed as a body of people several centuries before; for the arts are only the work of time, and men's natural laziness leaves them for some thousands of years without other knowledge and without other talents than those of feeding themselves, of defending themselves against the injuries of the air, and of slaughtering each other. Let us judge by the Germans and by the English in Caesar's time, by the Tartars to-day, by the two-thirds of Africa, and by all the peoples we have found in America, excepting in some respects the kingdoms of Peru and of Mexico, and the republic of Tlascala. Let us remember that in the whole of this new world nobody knew how to read or write. The second record is the central eclipse of the sun, calculated in China two thousand one hundred and fifty-five years before our era, and recognized true by our astronomers. Of the Chinese the same thing must be said as of the peoples of Babylon; they already comprised a vast civilized empire without a doubt. But what puts the Chinese above all the peoples of the earth is that neither their laws, nor their customs, nor the language spoken among them by their lettered mandarins has changed for about four thousand years. Nevertheless, this nation and the nation of India, the most ancient of all those that exist to-day, which possess the vastest and the most beautiful country, which invented almost all the arts before we had learned any of them, have always been omitted right to our days in all so-called universal histories. And when a Spaniard and a Frenchman took a census of the nations, neither one nor the other failed to call his country the first monarchy in the world, and his king the greatest king in the world, flattering himself that his king would give him a pension as soon as he had read his book. The third record, very inferior to the two others, exists in the Arundel marbles: the chronicle of Athens is graved there two hundred and sixty-three years before our era; but it goes back only to Cecrops, thirteen hundred and nineteen years beyond the time when it was engraved. In the history of antiquity those are the sole incontestable epochs that we have.