"Before I tell you," wrote Rousseau towards the end of the eighteenth century, "what I think of this famous theatre, I will state what is said about it. The judgment of connoisseurs may correct mine if I am wrong. The Opera of Paris passes in the capital for the most pompous, the most voluptuous, the most admirable spectacle that human art has ever invented. Its admirers declare it to be the most superb monument of the magnificence of Louis XIV., and one is not so free as you may think to express an opinion on such an important subject. Here you may dispute about everything except music and the Opera; on these topics alone it is dangerous not to dissemble. French music is defended, too, by a very rigorous inquisition, and the first thing intimated as a warning to strangers who visit this country is that all foreigners admit there is nothing in this world so fine as the Opera of Paris. The fact is, discreet people hold their tongues, and dare only laugh in their sleeves." Rousseau then, speaking in the person of St. Preuz, the hero of "La nouvelle Héloise," describes the performance as it took place at the Opera. "Imagine," he says, "an enclosure fifteen feet broad, and long in proportion; this enclosure is the theatre. On its two sides are placed at intervals screens, which are crudely painted with the objects which the scene is about to represent. At the back of the enclosure hangs a great curtain, painted in like manner and nearly always pierced and torn that it may represent at a little distance gulfs on the earth or holes in the sky. Everyone who passes behind this stage or touches the curtain produces a sort of earthquake which has a double effect. The sky is made of certain bluish rags suspended from poles or cords, as linen may be seen hung out to dry in any washerwoman's yard. The sun, which is here sometimes seen, is a lighted torch in a lantern. The cars of the gods and goddesses are composed of four rafters squared and hung on a thick rope in the form of a swing or see-saw; between the rafters is a cross plank on which the god sits down, and in front hangs a piece of coarse cloth, well dirtied, which acts the part of clouds for the magnificent car. One may see, towards the bottom of the machine, two or three stinking candles, badly snuffed, which, while the great personage dementedly presents himself swinging in his see-saw, fumigate him with an incense worthy of his dignity. The agitated sea is composed of long angular arrangements of cloth and blue pasteboard strung on parallel spits, which are turned by little blackguard boys. The thunder is a heavy cart rolled over an arch, and is not the least agreeable instrument one hears. The flashes of lightning are made of pinches of resin thrown on a flame; and the thunder is a cracker at the end of a fusee.