EditorialAdéla?de Labille-Guiard, “Self-Portrait with Two Pupils, Marie Gabrielle Capet (1761–1818) and Marie Marguerite Carreaux de Rosemond (died 1788),” (1785), at the Metropolitan Museum of Art’s “A New Look at Old Masters,” in New York on Dec. 21, 2020. (Jeenah Moon/The New York Times)