This collection of essays, published under the auspices of the International Monetary Fund, brings together the most current writings of one of the founders of modern open-economy macroeconomics. As former Director of Research and a member of the Executive Board at the IMF, Jacques J. Polak has advised theoreticians and policymakers worldwide, his work has affected nations and their citizens. The selected essays are divided among three central themes: The Role of the International Monetary Fund, New Thoughts on the Special Drawing Right (SDR), and International Economic Policy: Theory and Practice.