We find but few historians of all ages, who have been diligent enough in their search for truth: it is their common method to take on trust what they distribute to the public; by which means a falsehood once received from a famed writer becomes traditional to posterity. But Polybius weighed the authors from whom he was forced to borrow the history of the times immediately preceding his, and oftentimes corrected them, either by comparing them each with other, or by the lights which he had received from ancient men of known integrity amongst the Romans, who had been conversant in those affairs which were then managed, and were yet living to instruct him. He also learned the Roman tongue; and attained to that knowledge of their laws, their rights, their customs, and antiquities, that few of their own citizens understood them better: having gained permission from the senate to search the Capitol, he made himself familiar with their records, and afterwards translated them into his mother-tongue. So that he taught the noblemen of Rome their own municipal laws, and was accounted more skilful in them than Fabius Pictor, a man of the senatorian order, who wrote the transactions of the Punic wars. He who neglected none of the laws of history, was so careful of truth, (which is the principal,) that he made it his whole business to deliver nothing to posterity which might deceive them; and by that diligence and exactness, may easily be known to be studious of truth, and a lover of it. What therefore Brutus thought worthy to transcribe with his own hand out of him, I need not be ashamed to copy after him: “I believe,” says Polybius, “that nature herself has constituted truth as the supreme deity, which is to be adored by mankind, and that she has given it greater force than any of the rest; for being opposed, as she is on all sides, and appearances of truth so often passing for the thing itself, in behalf of plausible falsehoods, yet by her wonderful operation she insinuates herself into the minds of men; sometimes exerting her strength immediately, and sometimes lying hid in darkness for length of time; but at last she struggles through it, and appears triumphant over falsehood.” This sincerity Polybius preferred to all his friends, and even to his father: “in all other offices of life,” says he, “praise a lover of his friends, and of his native country; but in writing history, I am obliged to divest myself of all other obligations, and sacrifice them all to truth.”