In the early 1920s, Piet Mondrian began creating what would become some of the most recognizable abstract paintings of the 20th century. With rectangles of primary colors against a dazzling white background, this was geometric abstraction in its purest form. These revolutionary compositions exhilarated, intoxicated, confused, and enraged the international public—and changed the course of modern art forever. Here is the life of an elusive modern master: from his youth in a religious household in the Netherlands where he first began painting Dutch farmhouses and sand dunes, to his move to Paris where he embraced the work of Pablo Picasso, Georges Seurat, and Cézanne, to surviving the turmoil of two world wars and embracing a rapidly shifting culture, Mondrian challenged the concept of art and invented a new world of undiluted colors and rhythmic straight lines.