In fourteen essays that speak to the full breadth of George L. Mosse’s intellectual horizons and scholarly legacy, Masses and Man explores radical nationalism, fascism, and Jewish modernity in twentieth-century Europe. Breaking from the conventions of historical analysis, Mosse shows that “secular religions” like fascism cannot be understood only as the products of socioeconomic or intellectual histories but rather must be approached first and foremost as cultural phenomena. Masses and Man comprises three parts. The first lays out a cultural history of nationalism, essentially the first of its kind, emphasizing the importance of sacred expressions like myths, symbols, and rituals as appropriated in a political context. The second zeroes in on fascism’s most dramatic irruptions in European history in the rise of Italian Fascism and the Nazi Party in Germany, elucidating these as not just political movements but also cultural and even aesthetic ones. The third part considers nationalism and fascism from the particular standpoint of German Jews. Taken in full, the volume offers an eloquent summation of Mosse’s groundbreaking insights into European nationalism, fascism, and Jewish history in the twentieth century. A new critical introduction by Enzo Traverso helpfully situates Mosse’s work in context and exposes the many ways in which Masses and Man, first published in 1980, remains relevant today.