For decades, the study of literary and philosophical modernism concerned solitary figures like the flâneur, the exile, and the lonely genius, but recently the group formations that fostered modernist movements have emerged into view. The essays in Modernist Group Dynamics: The Poetics and Politics of Friendship pursue this new direction in modernist scholarship, exploring the ways artists and intellectuals worked in concert and in conflict. Placing group formations, with all their promises and problems, at the centre of our study allows the contributors—scholars from around the world—to reconsider some of the best-known figures of European modernism, to analyze collaborations across national boundaries, and to recover modernist groups in unexpected contexts like the so-called Third World.