I have often thought that there has rarely passed a life of which a judicious and faithful narrative would not be useful. For, not only every man has, in the mighty mass of the world, great numbers in the same condition with himself, to whom his mistakes and miscarriages, escapes and expedients, would be of immediate and apparent use; but there is such an uniformity in the state of man, considered apart from adventitious and separable decorations and disguises, that there is scarce any possibility of good or ill, but is common to human kind. A great part of the time of those who are placed at the greatest distance by fortune, or by temper, must unavoidably pass in the same manner; and though, when the claims of nature are satisfied, caprice, and vanity, and accident, begin to produce discriminations and peculiarities, yet the eye is not very heedful or quick, which cannot discover the same causes still terminating their influence in the same effects, though sometimes accelerated, sometimes retarded, or perplexed by multiplied combinations. We are all prompted by the same motives, all deceived by the same fallacies, all animated by hope, obstructed by danger, entangled by desire, and seduced by pleasure. It is frequently objected to relations of particular lives, that they are not distinguished by any striking or wonderful vicissitudes. The scholar who passed his life among his books, the merchant who conducted only his own affairs, the priest, whose sphere of action was not extended beyond that of his duty, are considered as no proper objects of publick regard, however they might have excelled in their several stations, whatever might have been their learning, integrity, and piety. But this notion arises from false measures of excellence and dignity, and must be eradicated by considering, that in the esteem of uncorrupted reason, what is of most use is of most value. It is, indeed, not improper to take honest advantages of prejudice, and to gain attention by a celebrated name; but the business of a biographer is often to pass slightly over those performances and incidents, which produce vulgar greatness, to lead the thoughts into domestick privacies, and display the minute details of daily life, where exterior appendages are cast aside, and men excel each other only by prudence and by virtue. The account of Thuanus is, with great propriety, said by its author to have been written, that it might lay open to posterity the private and familiar character of that man, _cujus ingenium et candorem ex ipsius scriptis sunt olim semper miraturi_, whose candour and genius will to the end of time be by his writings preserved in admiration.