英国哲学家和政治思想史家，20世纪最著名的自由主义知识分子之一。出生于俄国里加的一个犹太人家庭，1920年随父母前往英国。1928年进入牛津大学攻读文学和哲学，曾任牛津大学社会与政治理论教授，沃尔夫森学院院长，1957年获封爵士。主要著作有《卡尔·马克思》、《俄国思想家》、《概念与范畴》、《反潮流》、《个人印象》、《扭曲的人性之材、《现实感》、《浪漫主义的根源》、《观念的力量》、《自由及其背叛》、《自由论》、《苏联的心灵》等。作为接触的思想史研究者，先后被授予伊拉斯谟奖、利平科特奖和阿涅利奖。

Isaiah Berlin was deeply admired during his life, but his full contribution was perhaps underestimated because of his preference for the long essay form. The efforts of Henry Hardy to edit Berlin's work and reintroduce it to a broad, eager readership have gone far to remedy this. Now, Princeton is pleased to return to print, under one cover, Berlin's essays on Vico, Hamann, and Herder. These essays on three relatively uncelebrated thinkers are not marginal ruminations, but rather among Berlin's most important studies in the history of ideas. They are integral to his central project: the critical recovery of the ideas of the Counter-Enlightenment and the explanation of its appeal and consequences - both positive and (often) tragic. Giambattista Vico was the anachronistic and impoverished Neapolitan philosopher sometimes credited with founding the human sciences. He opposed Enlightenment methods as cold and fallacious. J. G. Hamann was a pious, cranky dilettante in a peripheral German city. But he was brilliant enough to gain the audience of Kant, Goethe, and Moses Mendelssohn. In Hamann's chaotic and long-ignored writings, Berlin finds the first strong attack on Enlightenment rationalism and a wholly original source of the coming swell of romanticism. Johann Gottfried Herder, the progenitor of populism and European nationalism, rejected universalism and rationalism but championed cultural pluralism. Individually, these fascinating intellectual biographies reveal Berlin's own great intelligence, learning, and generosity, as well as the passionate genius of his subjects. Together, they constitute an arresting interpretation of romanticism's precursors. In Hamann's railings and the more considered writings of Vico and Herder, Berlin finds critics of the Enlightenment worthy of our careful attention. But he identifies much that is misguided in their rejection of universal values, rationalism, and science. With his customary emphasis on the frightening power of ideas, Berlin traces much of the next centuries' irrationalism and suffering to the historicism and particularism they advocated. What Berlin has to say about these long-dead thinkers - in appreciation and dissent - is remarkably timely in a day when Enlightenment beliefs are being challenged not just by academics but by politicians and by powerful nationalist and fundamentalist movements. The study of J. G. Hamann was originally published under the title "The Magus of the North: J. G. Hamann and the Origins of Modern Irrationalism". The essays on Vico and Herder were originally published as "Vico and Herder: Two Studies in the History of Ideas". Both are out of print.