The immense contributions of Robert Gilpin both to the study of international relations and in furthering the scholarship of others are assessed in Robert Gilpin and International Relations: Reflections, a collection of essays by eminent political scientists. Gilpin's "soft realist," interdisciplinary approach has influenced generations of students and scholars in their study of international political economy, US foreign policy, IR theory, the balance of power, the relationship between science and politics, and myriad other topics.