As already observed, it happens that thirteen of Plutarch's extant Lives are the lives of the most distinguished of the Romans who lived during this eventful period; and though Plutarch's Lives severally are not histories of the times to which they respectively refer, nor collectively form a History of any given time, yet they are valuable as portraits of illustrious men, and help us to form a better judgment of those who make so conspicuous a figure in History.
Plutarch was a native of the town of Chaeroneia, in Boeotia; the times of his birth and death are not exactly known, but we learn from his own works that he was a young student at Delphi, in the thirteenth year of the reign of the Emperor Nero, A.D. 66. He visited both Italy and Rome, and probably resided at Rome for some time. He wrote his Life of Demosthenes, at least after his return to Chaeroneia: he says (Life of Demosthenes, c. 2), that he had not time to exercise himself in the Latin Language during his residence at Rome, being much occupied with public business, and giving lessons in philosophy. Accordingly it was late before he began to read the Latin writers; and we may infer from his own words that he never acquired a very exact knowledge of the language. He observes that it happened in his case, that in his study of the Latin writers he did not so much learn and understand the facts from the words, as acquire the meaning of the words from the facts, of which he had already some knowledge. We may perhaps conclude from this, that Plutarch wrote all his Roman lives in Chaeroneia, after he had returned there from Rome. The statement that Plutarch was the preceptor of the Emperor Trajan, and was raised to the consular rank by him, is not supported by sufficient evidence. Plutarch addressed to Trajan his Book of Apophthegms, or Sayings of Kings and Commanders; but this is all that is satisfactorily ascertained as to the connection between the Emperor and Philosopher. Trajan died A.D. 117.
"The plan of Plutarch's Biographies is briefly explained by himself in the introduction to the Life of Alexander the Great, where he makes an apology for the brevity with which he is compelled to treat of the numerous events in the Lives of Alexander and Caesar. 'For,' he says, 'I do not write Histories, but Lives; nor do the most conspicuous acts of necessity exhibit a man's virtue or his vice, but oftentimes some slight circumstance, a word, or a jest, shows a man's character better than battles with the slaughter of tens of thousands, and the greatest arrays of armies and sieges of cities. Now, as painters produce a likeness by a representation of the countenance and the expression of the eyes, without troubling themselves about the other parts of the body, so I must be allowed to look rather into the signs of a man's character, and thus give a portrait of his life, leaving others to describe great events and battles.' The object then of Plutarch in his Biographies was a moral end, and the exhibition of the principal events in a man's life was subordinate to this his main design; and though he may not always have adhered to the principle which he laid down, it cannot be denied that his view of what biography should be, is much more exact than that of most persons who have attempted this style of composition. The life of a statesman or of a general, when written with a view of giving a complete history of all the public events in which he was engaged, is not biography, but history. This extract from Plutarch will also in some measure be an apology for the want of historical order observable in many of his Lives. Though altogether deficient in that critical sagacity which discerns truth from falsehood, and distinguishes the intricacies of confused and conflicting statements, Plutarch has preserved in his Lives a vast number of facts which would otherwise have been unknown to us. He was a great reader, and must have had access to large libraries. It is said that he quotes two hundred and fifty writers, a great part of whose works are now entirely lost." (Penny Cyclopaedia, art. "Plutarch," by the writer of this Preface.)
The lively portraitures of men drawn in Plutarch's Lives have made them favourite reading in all ages. Whether Plutarch has succeeded in drawing the portraits true, we cannot always determine, because the materials for such a judgment are sometimes wanting. But when we can compare his Lives with other extant authorities, we must admit, that though he is by no means free from error as to his facts, he has generally selected those events in a man's life which most clearly show his temper, and that on the whole, if we judge of a man by Plutarch's measure, we shall form a just estimate of him. He generally wrote without any predilections or any prejudices. He tells us of a man's good and bad acts, of his good and bad qualities; he makes no attempt to conceal the one or the other; he both praises and blames as the occasion may arise; and the reader leaves off with a mixed opinion about Plutarch's Greeks and Romans, though the favourable or the unfavourable side always predominates. The benevolent disposition of Plutarch, and his noble and elevated character, have stamped themselves on all that he has written. A man cannot read these Lives without being the better for it: his detestation of all that is mean and disingenuous will be increased; his admiration of whatever is truthful and generous will be strengthened and exalted.
The translation of these Lives is difficult. Plutarch's text is occasionally corrupted; and where it is not corrupted, his meaning is sometimes obscure. Many of the sentences are long and ill–constructed; the metaphors often extravagant; and the just connection of the parts is sometimes difficult to discover. Many single words which are or ought to be pertinent in Plutarch, and which go towards a description of character in general or of some particular act, can hardly be rendered by any English equivalent; and a translator often searches in vain for something which shall convey to the reader the exact notion of the original. Yet Plutarch's narrative is lively and animated; his anecdotes are appropriately introduced and well told; and if his taste is sometimes not the purest, which in his age we could not expect it to be, he makes amends for this by the fulness and vigour of his expression. He is fond of poetical words, and they are often used with striking effect. His moral reflections, which are numerous, have the merit of not being unmeaning and tiresome, because he is always in earnest and has got something to say, and does not deal in commonplaces. When the reflection is not very profound, it is at least true; and some of his remarks show a deep insight into men's character.