XV. Is it not probable that historians have been partial to their own nation? that they have been silent upon, or have spoke slightingly of the merit of those whose families have fallen to decay, or been nearly extinguished? and that on the contrary, they have endeavoured to elevate the names and extol the fame of those families from whom they expected to be rewarded? The motives for disguising the truth are many; and Tacitus, notwithstanding his protestations that he is perfectly uninfluenced by hatred or the hopes of reward; I say, notwithstanding this, a suspicious reader would give most credit to Estrady; who says, that in order to be a good historian, a man should divest himself of country and religion, should be of no profession, nor a follower of any party; which comes pretty near to saying he should not be a man. XVI. It would be loss of time, says S. Real, to study history in hopes of knowing with certainty what has passed in the world; as the principal information that can be derived from it, is a knowledge of what such and such authors believed; and that we should not so much seek in history for facts, as for the opinions of men. Clio, the muse who presides over history, becomes a prostitute, who, for any price, surrenders herself to the embraces of the first who solicits her favours. XVII. Velleius Paterculus, the unworthy flatterer of Tiberius and his favourite Sejanus, may be more properly said to have composed a panegyric than a history. Zozimus let himself be carried away by passion, and his resentment against Constantine; and Eusebius flattered him in every thing. Titus Livius was an avowed favourer of the party of Pompey; and Dion Cassius was very partial to Cæsar. XVIII. History is a present, which should only be made to posterity. Bocalini recommends, that an historian should write nothing but what has come within the compass of his own observation; and that his book should not be published till after he is dead. But even supposing that he has been quite impartial, which, by the way, is a thing rather to be wished for than expected, still, the work of every writer partakes of his own character or disposition. Sallust is a moralist; Tacitus, a politician; and Titus Livius, superstitious and an orator. They all endeavour to point out to us the causes of events which were unknown, not only to the people who lived when they happened, but even to those who had some hand in negociating public business. XIX. Greece was so fertile in historians, that the account of one battle was related by more than three hundred authors. Lucian compares the passion of the Greeks for writing history, to the epidemical disease of the Abderitans, in which there was much madness mixed.