Marc Chagall was a man of keen intelligence, a shrewd observer of the contemporary scene, with a great sympathy for human suffering. He was born on July 7, 1887 in Vitebsk, Russia; his original name was Moishe Shagal (Segal), but when he became a foremost member of the Ecole de Paris, he adopted French citizenship and the French spelling of his name. Vitebsk was a good-sized Russian town of over 60,000, not a shtetl. His father supported a wife and eight children as a worker in a herring-pickling plant.

Sheltered by the Jewish commandment against graven images, the young Chagall never saw so much as a drawing until, one day, he watched a schoolmate copying a magazine illustration. He was ridiculed for his ast...