This edition of Elie Kedourie's ''Nationalism'' brings back into print one of the classic texts of our times. With great elegance and lucidity, the author traces the philosophical foundations of the nationalist doctrine, the conditions which gave rise to it, and the political consequences of its spread in Europe and elsewhere over the past two centuries. As Isaiah Berlin wrote of the original edition, ''Kedourie's account of these ideas and their effect is exemplary: clear, learned and just.'' In a new introduction the author reflects upon the origins of the book and the relationship of his argument to contemporary nationalist conflicts.