In Ideas Matter a wide array of Irish and international figures pay tribute to Conor Cruise O'Brien, with a collection of original essays on a wide range of issues which fascinated O'Brien: Irish history and politics, the United Nations, the Middle East, African affairs, American studies, the interplay of literature and politics, Edmund Burke, deTocqueville, Camus, and W.B. Yeats. They also reflect, with admiration and affection, on the highlights of a remarkable career. The broad reach of these topics underscores the scope of O'Brien's concerns. This book will be of interest to students of the humanities and political sciences.