'Over a hundred years ago, the German poet Heine warned the French not to underestimate the power of ideas: philosophical concepts nurtured in the stillness of a professor's study could destroy a civilisation' - Isaiah Berlin,Two Concepts of Liberty, 1958.

The nineteen essays collected here show Isaiah Berlin at his most lucid: these short, introductory pieces provide the perfect starting point for the reader new to his work. Their linking theme is the crucial social and political role of ideas, and of their progenitors. The subjects vary widely - from philosophy to education, from Russia to Israel, from Marxism to romanticism - and the appositeness of Heine's warning is exemplified on a broad front.

The contents include Berlin's last essay - a retrospective autobiographical survey and the classic statement of his Zionist views. As a whole the book exhibits the full range of his expertise, and demonstrates the enormously engaging individuality, as well as the power, of his own ideas.

Isaiah Berlin was born in Riga, now capital of Latvia, in 1909. When he was six, his family moved to Russia, and in Petrograd in 1917 Berlin witnessed both Revolutions - Social Democratic and Bolshevik. In 1921 he and his parents emigrated to England, where he was educated at St Paul's School, London, and Corpus Christi College, Oxford. Apart from his war service in New York, Washington, Moscow and Leningrad, he remained at Oxford thereafter - as a Fellow of All Souls, then of New College, as Chichele Professor of Social and Political Theory, and as founding President of Wolfson College. He also held the Presidency of the British Academy.

His published work includesKarl Marx, Russian Thinkers, Concepts and Categories, Against the Current, Personal Impressions, The Sense of Reality, The Proper Study of Mankind, The Roots of Romanticism, The Power of Ideas, Three Critics of the Enlightenment, Freedom and Its Betrayal, Liberty, The Soviet MindandPolitical Ideas in the Romantic Age. As an exponent of the history of ideas he was awarded the Erasmus, Lippincott and Agnelli Prizes; he also received the Jerusalem Prize for his lifelong defence of civil liberties. He died in 1997.

'A volume which covers the key areas of Berlin's interests in an unusually accessible way; it will take its place as, quite simply, the best short introduction to his thinking' - Sunday Telegraph