At Constantinople, the city of marvels, which had not yet become the city of mosques, but was still enriched by the spoils of Athens and Rome, where St. Sophia shone with all the glory of its mosaics intact, where the palace of the emperors dazzled the sight with its gold and its statues, the French princes could scarcely believe their eyes. At every step they were startled by some fresh wonder; here bronze children blowing horns; there a revolving hall set in motion by the sea-breeze; elsewhere a carbuncle which illuminated apartments at night. The queen might possibly have spoken truth. Evening draws on, they drink deep, and, excited by their potations, indulge in _gabs_, or boasts, that are overheard by a spy, and carefully noted. Ogier the Dane will uproot the pillar which supports the whole palace; Aimer will make himself invisible and knock the emperor's head on the table; Roland will sound his horn so loudly that the gates of the town will be forced open. Threatened and insulted by his guests, Hugon declares they shall either accomplish their _gabs_ or pay for their lies with their heads. This is too much, and the author changes his tone. Will God permit the confusion of the emperor of the Franks, however well deserved it be? "Vivat qui Francos diligit Christus!" was already written in the Salic law: Christ continues to love the Franks. He takes their cause into His own hands, not because of their deserts but because they are Franks. By a miracle, one after another, the _gabs_ are realised; Hugon acknowledges the superiority of Charles, who returns to France, enriches St. Denis with incomparable relics, and forgives the queen. This poem is exactly contemporaneous with the Song of Roland. But there is better still, and the comedy is much more general in the famous "Roman de Renart."[204] This romance, of which the branches are of various epochs and by various authors, was composed partly in the continental estates of the kings of England, partly in the France of French kings. It was built up, part after part, during several centuries, beginning with the twelfth: built like a cathedral, each author adding a wing, a tower, a belfry, a steeple; without caring, most of the time, to make known his name; so that the poem has come down to us, like the poems in stone of the architects, almost anonymously, the work of every one, an expression and outcome of the popular mind. For many Frenchmen of ancient France, a _chanson_ was a sufficient revenge, or at least served as a temporary one. So much pleasure was taken in it, that by such means the tyranny of the ruler was forgotten. On more than one occasion where in other countries a riot would have been unavoidable, in France a song has sufficed; discontent, thus attenuated, no longer rose to fury. More than one jacquerie has been delayed, if not averted, by the "Roman de Renart."