No artist has handled pastel more adroitly than did Maurice Quentin de La Tour (1704–88). His portraits, perceptive in characterization and brilliant in technique, represent a virtual who’s who of the French Enlightenment. La Tour’s facility was hard earned. He was known to ceaselessly rework his pastels, sometimes spending years on a portrait, yet his most engaging works are often the more spontaneous preparatory drawings. His Self-Portrait in the Art Institute of Chicago was drawn with this freshness of spirit.
“King Louis XV and Queen Marie Leszczyńska sat for him, as did philosophers Voltaire and Rousseau.” La Tour was born in Saint-Quentin, France, and as a teenager moved to Paris, where he was apprenticed to an obscure artist. Following the example of Rosalba Carriera (1673–1757), he began making portraits in…