All these developments are (with the exception of biography) those of the Golden Age of Greek Literature, and are the discovery of great masters who were the glory of that age. But as we shall see frequently in the course of these lectures, the silver age of Greece was almost as fruitful in the creation of models for the imitation of modern Europe. It was only after a great body of splendid authors had lived, that we could expect to find literary criticism assuming an important place. For the literary critic is after all a sort of parasite, who lives on the bodies of greater and more dignified animals. We know that when the library of Alexandria came to be collected, and the sifting of authors and of the texts of authors became necessary, there arose a great school of critical scholars, who purified the received copies, who apportioned the respective value of the texts, and who developed that censorious attitude toward the classical masterpieces which is the bane of the modern world. We still have in the critical essays of Dionysius of Halicarnassus and still more in the Tract on the Sublime, belonging to the 1st century A.D., excellent models of what is good and useful in this reflexive attitude of a later age, and of second rate ability. The great age of production had been very simple and naïve in criticism; the attitude of Aristophanes, and even of Plato, in judging poets is merely a moral judgment and seems never to take into consideration æsthetic questions. In the Tract on the Sublime we find quite a modern standpoint, and the judgments of this author have had no small effect on the literature of the last century. No less a person than Edmund Burke thought it worth while to translate this tract, and how wide was the author’s sympathy will appear at once from this fact, that he quotes as a signal instance of the sublime the opening of a work far removed in spirit from classical Greek literature--the book of _Genesis_, in the Greek version. I need not delay over the many and various Epistles left us by the Greeks, and which you may see collected in one of Didot’s big volumes of _Epistolographi Graeci_. But I do not think that we can call letter writing a distinct form of literature, and it is very certain that every nation that could use writing materials could hardly fail to adopt it in some form. Nor do I think the letters extant are in any way remarkable, perhaps because most of them are the compilations of men attributing these documents falsely to the great ancients. The letters ascribed to Plato, Isocrates, and others give us nothing additional of literary importance.[18] I will therefore pass from these, as well as from the moral harangues of the later rhetors and sophists of whom Dion Chrysostom is far the most interesting. I wish modern sermons would borrow more from this admirable and little used source, for Dion was a man of the world, a traveller, a sound moral teacher, and gifted with a great taste for the picturesque.