The presence of life in the Essais manifests itself in an attention to the particularities of the individual, not only in the painting of the self that defines Montaigne's enterprise, but also in his reading of historians. This reading proceeds by turning our gaze towards the idiosyncrasies, tics and details that are revealed in the Lives of illustrious men as recounted by the Ancients, notably Plutarch, who features prominently in the Essays, but also Sallustus, Caesar, Titus Livius, Catullus and Quinte-Curce, as well as contemporary historians such as Froissart, Commynes and Guichardin. The Lives of these authors were widely read and commented on by Montaigne, but diverted from their exemplary function.
In Plutarch's Life of Alexander , he highlights the contradictions of a character that was at once gentle and cruel, calm and choleric, and focuses on the faults and vices pinned among the virtues, showing the individuality beneath the hero's armor. The chapter "Des senteurs" (I, 55) opens with a reference to Alexander's sweat, which "spread a sweet odor, by some rare and extraordinary complexion for which Plutarch and others seek the cause": the topos of Alexander's good odor joins that of dignitas homini. The physical detail, borrowed from Plutarch and pinned to Montaigne's pen through the paronomasia that links the word sweat to the adjective suave, denotes a thoroughly modern sensitivity to odors.
In the chapter "De la présomption" (II, 17), he takes pains to point out other physical details in historians' writings, touching on the bodies, gestures and mimicry of great men: Alexander tilting his head to one side, Caesar scratching his head with a finger, Cicero scratching his nose, and so on. These uncontrolled physical manifestations, revealing in intimate detail the "form" and "naturalness" that lie beneath the uniform appearance of illustrious men, constitute a privileged theme of the Essays , which in this respect provides the outline of a history of intimacy based on attention to the language of the body.
Under the guise of examining the two sides of the same vice - "esteeming oneself too much" and "not esteeming others enough" - Montaigne delivers in this chapter the first self-portrait in the Essais , and confesses that he knows "nothing worthy of great admiration". His acquaintance with the "rich souls of the past" led him to belittle his contemporaries and judge his own century as mediocre; in every man, in every life, he found disappointing, contradictory details: "I know men well enough, who have various beautiful parts [...]. But of great men in general, and having so many beautiful parts together [...], my fortune has shown me none". La Boétie is the only one of his contemporaries to appear to him as a great man worthy of the Ancients through his virtue, but who lacked the fortune to produce great deeds. The enumeration of great military men, illustrious rulers and poets who shone through some aspect of their lives, serves to illustrate the idea that no man is complete, total, without discord.
The chapter "Des plus excellens hommes" (II, 36), whose title is a translation of De Viris illustribus, draws up Montaigne's Pantheon according to three parallels conceived in the manner of Plutarch, highlighting the first name in relation to the second: Homer versus Virgil, Alexander versus Caesar, Epaminondas versus Scipio. The three heroes thus "put to the test" force an admiration that nonetheless always finds some contradiction against which it resists. Such is the case of Alexander, whose portrait is corrected on reading Quinte-Curce, according to the details of particular actions that blacken the uniform picture of his virtues as painted by Plutarch. Even the list of the virtues of Epaminondas, placed by Montaigne above all others, is marred by a compromising detail: "I know of no form or fortune of man whom I regard with such honor and love. It is quite true that I find his obstinacy in poverty to be by no means scrupulous". This conduct, which arouses admiration but cannot be emulated, cannot claim to be exemplary: criticism of great men leads to praise of the average, mediocre life.