This introductory chapter provides a rationale for the study of Allen Ginsberg and his poetry while outlining the major themes, issues, and motivations of the volume. Ginsberg is an essential figure in twentieth-century US poetics. His work is an important part of the larger turn from “closed” to “open” verse forms in the postwar period, and his role as perhaps the major countercultural figure in the 1960s and 1970s meant that his work garnered an international audience. The goal of this volume is to provide readers with the context necessary to understand how Ginsberg’s life and interests shaped his work; how his work, in its turn, entered the greater poetic discourse of the time; and finally, how Ginsberg sought to influence not just American but indeed global political and cultural realities of the postwar period. Taking a broadly chronological approach, this volume charts the wide variety of contexts crucial to understanding not just Ginsberg, his writing, and his career, but many of the larger trends of the long twentieth century as well.