The dialogue _De Oratore_ was written in the year 698, when Cicero, disgusted with the political dissensions of the capital, had retired, during part of the summer, to the country: But, according to the supposition of the piece, the dialogue occurred in 662. The author addresses it to his brother in a dedication, strongly expressive of his fondness for study; and, after some general observations on the difficulty of the oratoric art, and the numerous accomplishments requisite to form a complete orator, he introduces his dialogue, or rather the three dialogues, of which the performance consists. Dialogue writing may be executed either as direct conversation, in which none but the speakers appear, and where, as in the scenes of a play, no information is afforded except from what the persons of the drama say to each other; or as the recital of the conversation, where the author himself appears, and after a preliminary detail concerning the persons of the dialogue, and the circumstances of time and place in which it was held, proceeds to give an account of what passed in the discourse at which he had himself been present, or the import of which was communicated to him by some one who had attended and borne his part in the conference. It is this latter method that has been followed by Cicero, in his dialogues _De Oratore_. He mentions in his own person, that during the celebration of certain festivals at Rome, the orator Crassus retired to his villa at Tusculum, one of the most delightful retreats in Italy, whither he was accompanied by Antony, his most intimate friend in private life, but most formidable rival in the Forum; and by his father-in-law, Scævola, who was the greatest jurisconsult of his age, and whose house in the city was resorted to as an oracle, by men of the highest rank and dignity. Crassus was also attended by Cotta and Sulpicius, at that time the two most promising orators of Rome, the former of whom afterwards related to Cicero (for the author is not supposed to be personally present) the conversation which passed among these distinguished men, as they reclined on the benches under a planetree, that grew on one of the walks surrounding the villa. It is not improbable, that some such conversation may have been actually held, and that Cicero, notwithstanding his age, and the authority derived from his rhetorical reputation, may have chosen to avail himself of the circumstance, in order to shelter his opinions under those of two ancient masters, who, previously to his own time, were regarded as the chief organs of Roman eloquence.