From The Atlantic:
Only the self-aware can have charm: It’s bound up with a sensibility that at best approaches wisdom, or at least worldliness, and at worst goes well beyond cynicism. It can’t exist in the undeveloped personality. It’s an attribute foreign to many men because most are, for better and for worse, childlike. These days, it’s far more common among men over 70—probably owing to the era in which they reached maturity rather than to the mere fact of their advanced years. What used to be called good breeding is necessary (but not sufficient) for charm: no one can be charming who doesn’t draw out the overlooked, who doesn’t shift the spotlight onto others—who doesn’t, that is, possess those long-forgotten qualities of politesse and civilité. A great hostess perforce has charm (while legendary hostesses are legion—Elizabeth Montagu, Madame Geoffrin, Viscountess Melbourne, Countess Greffulhe—I can’t think of a single legendary host), but today this social virtue goes increasingly unrecognized. Still, charm is hardly selfless. All of these acts can be performed only by one at ease with himself yet also intensely conscious of himself and of his effect on others. And although it’s bound up with considerateness, it really has nothing to do with, and is in fact in some essential ways opposed to, goodness. Another word for the lightness of touch that charm requires in humor, conversation, and all other aspects of social relations is subtlety, which carries both admirable and dangerous connotations. Charm’s requisite sense of irony is also the requisite for social cruelty.
…More important, charm, for all its appeal, isn’t a moral virtue—it’s an amoral one. Americans, especially American men, have always been, for some very good reasons, ambivalent about charm. It’s an attribute alien to many men because they are ingenuous, a quality that can itself be either admirable or unlovely. Many American military men deserve our esteem; the many I have known indeed do, but I have never met one with an ounce of charm. Indeed, what American hero has possessed it? The quintessential modern American hero, the eternally jejune and earnest Charles Lindbergh, who became a god when not yet a man, was in every way the antithesis of charm. America’s entire political history has been in some basic way a struggle between Jefferson—self-righteous, humorless, prickly, at once intellectually ardent and woolly—and Hamilton, a man foreign-born, witty, stylish, coolly brilliant, generous, possessed of a rare rapport with and an understanding of women. And just as Hamilton’s political vision triumphed, so did Jefferson’s political style.
More here.