Mésotês / le juste milieu
μεσότης (mesotēs)
Virtue as the mean: a middle ground between two vices, one of excess, the other of deficiency. This mean is not the arithmetic center of a thing, identical for all; it is relative to us—what neither errs by excess nor by defect in our actions and passions, as the truly wise person would determine it. Hitting this right mark is difficult, for it shifts with circumstances and the individual. Not to be mistaken for a measurable average, nor for lukewarmness or compromise: the mean is itself a peak, and in relation to the good, an extreme.
Elle est un milieu entre deux vices, l’un par excès, l’autre par défaut; et comme les vices consistent, les uns en ce qu’ils dépassent la mesure qu’il faut garder, les autres en ce qu’ils restent en dessous de cette mesure, soit pour nos actions, soit pour nos sentiments, la vertu consiste au contraire à trouver le milieu pour les uns et pour les autres, et à s’y tenir en le préférant.
The Greek term mesotēs (μεσότης) means “the state of what lies in the middle.” Aristotle makes it the formal structure of every virtue of character: between a vice of excess and a vice of deficiency, virtue occupies the right point. Courage holds the mean between recklessness and cowardice; generosity, between prodigality and miserliness; magnanimity, between vanity and small-mindedness.
Misinterpretation lurks at once, and Aristotle guards against it. The middle of a thing is its center, equidistant from both ends, the same for all—six is the middle of two and ten. But the mean that concerns us is “relative to us”: what errs neither by excess nor defect, and is never the same for two people or in two situations. The rightful anger of the weak is not that of the powerful. It is not, then, an average to be calculated, but a rightness to be discerned.
Hence the difficulty, which Aristotle compares to finding the center of a circle: anyone can get angry, that is easy; but to do so toward the right person, to the right degree, at the right time, and for the right end—that is given to few. The mean is not a comfortable resting place between two dangers—it is the highest demand.
It must not be confused, then, with lukewarmness or spineless compromise. Viewed in terms of substance, the mean is a mediocrity; but viewed in terms of goodness and perfection, it is a peak—“an extreme.” It is prudence that, in each singular case, sets its rule; without it, one would not know where it falls.