This work is certainly of the greatest service to the history of Roman eloquence; and it likewise throws considerable light on the civil transactions of the republic, as the author generally touches on the principal incidents in the lives of those eminent orators whom he mentions. It also gives additional weight and authority to the oratorical precepts contained in his other works, since it shows, that they were founded, not on any speculative theories, but on a minute observation of the actual faults and excellencies of the most renowned speakers of his age. Yet, with all these advantages, it is not so entertaining as might be expected. The author mentions too many orators, and says too little of each, which gives his treatise the appearance rather of a dry catalogue, than of a literary essay, or agreeable dialogue. He acknowledges, indeed, in the course of it, that he had inserted in his list of orators many who possessed little claim to that appellation, since he designed to give an account of all the Romans, without exception, who had made it their study to excel in the arts of eloquence.
The _Orator_, addressed to Brutus, and written at his solicitation, was intended to complete the subjects examined in the dialogues, _De Oratore_, and _De Claris Oratoribus_. It contains the description of what Cicero conceived necessary to form a perfect orator,--a character which, indeed, nowhere existed, but of which he had formed the idea in his own imagination. He admits, that Attic eloquence approached the nearest to perfection; he pauses, however, to correct a prevailing error, that the only genuine Atticism is a correct, plain, and slender discourse, distinguished by purity of style, and delicacy of taste, but void of all ornaments and redundance. In the time of Cicero, there was a class of orators, including several men of parts and learning, and of the first quality, who, while they acknowledged the superiority of his genius, yet censured his diction as not truely Attic, some calling it loose and languid, others tumid and exuberant. These speakers affected a minute and fastidious correctness, pointed sentences, short and concise periods, without a syllable to spare in them--as if the perfection of oratory consisted in frugality of words, and the crowding of sentiments into the narrowest possible compass. The chief patrons of this taste were Brutus and Licinius Calvus. Cicero, while he admitted that correctness was essential to eloquence, contended, that a nervous, copious, animated, and even ornate style, may be truely Attic; since, otherwise, Lysias would be the only Attic orator, to the exclusion of Isocrates, and even Demosthenes himself. He accordingly opposed the system of these ultra-Attic orators, whom he represents as often deserted in the midst of their harangues; for although their style of rhetoric might please the ear of a critic, it was not of that sublime, pathetic, or sonorous species, of which the end was not only to instruct, but to move an audience,--whose excitement and admiration form the true criterions of eloquence.