Mr. Sheridan was now approaching the summit of his dramatic fame; --he had already produced the best opera in the language, and there now remained for him the glory of writing also the best comedy. As this species of composition seems, more, perhaps, than any other, to require that knowledge of human nature and the world which experience alone can give, it seems not a little extraordinary that nearly all our first-rate comedies should have been the productions of very young men. Those of Congreve were all written before he was five-and-twenty.