For Marc Chagall (1887-1985), painting was an intricate tapestry of dreams, tales, and traditions. His instantly recognizable visual language carved out a unique early 20th-century niche, often identified as one of the earliest expressions of psychic experience. Chagall's canvases are characterized by loose brushwork, deep colors, a particular fondness for blue, and a repertoire of recurring tropes including musicians, roosters, rooftops, flowers, and floating lovers. For all their ethereal...