The vocabulary typically used to describe modern art—from Impressionism to installation, from the Nabis to Neo-Expressionism, from Symbolism to Hyperrealism—has gradually evolved into a specialized language, one that is sophisticated and, at times, daunting in its complexity. Styles, schools, and movements rarely have clear-cut boundaries or lend themselves to simple definitions; more often, they are internally contradictory, intricate, and frequently overlap within the artistic landscape. Nevertheless, the concepts of "style," "school," and "movement" persist, and an understanding of them is essential to any discussion of modern art. Defining their limits and characterizing their features remains the best way to "map" a subject that is so complex in its composition—and, at times, so difficult to grasp. This book is conceived as a systematic overview, comprising a series of individual essays, and serves as a general guide to one of the most dynamic and compelling periods in the history of art.