<DIV>The Hungarian émigré Imre Lakatos (1922–1974) earned a worldwide reputation through the influential philosophy of science debates involving Thomas Kuhn, Paul Feyerabend, and Sir Karl Popper. In <I>Imre Lakatos and the Guises of Reason</I> John Kadvany shows that embedded in Lakatos's English-language work is a remarkable historical philosophy rooted in his Hungarian past. Below the surface of his life as an Anglo-American philosopher of science and mathematics, Lakatos covertly introduced novel transformations of Hegelian and Marxist ideas about historiography, skepticism, criticism, and rationality.<br> Lakatos escaped Hungary following the failed 1956 Revolution. Before then, he had been an influential Communist intellectual and was imprisoned for years by the Stalinist regime. He also wrote a lost doctoral thesis in the philosophy of science and participated in what was criminal behavior in all but a legal sense. Kadvany argues that this intellectual and political past animates Lakatos's English-language philosophy, and that, whether intended or not, Lakatos integrated a penetrating vision of Hegelian ideas with rigorous analysis of mathematical proofs and controversial histories of science.<br> Including new applications of Lakatos's ideas to the histories of mathematical logic and economics and providing lucid exegesis of many of Hegel's basic ideas, <I>Imre Lakatos and the Guises of Reason</I> is an exciting reconstruction of ideas and episodes from the history of philosophy, science, mathematics, and modern political history.<br></div>