Nonchaloir (Repose), 1911. John Singer Sargent (American, 1856-1925). Oil on canvas. National Gallery of Art.

In keeping with his newfound preference for informal figure studies, Sargent depicted Rose–Marie Ormond Michel, his niece, as a languid figure absorbed in poetic reverie. The reclining woman, casually posed in an atmosphere of elegiac calm and consummate luxury, seems the epitome of nonchalance—the painting’s original title.