Isaiah Berlin was one of the great public intellectuals of his time. A magnetic speaker and beacon of liberal philosophy, he gained first-hand experience of some of the pivotal events of the twentieth century and crossed paths with luminaries from Virginia Woolf to Sigmund Freud. Declining to write an autobiography, Berlin instead agreed to give extensive interviews to acclaimed writer Michael Ignatieff in the final decade of his life. The result is a magisterial biography that penetrates deeply into Berlin's life and thought while capturing his vivid style of conversation. Reissued in this updated edition, it traces Berlin's journey to become one of his era's most vigorous defenders of liberty and individuality in the face of tyranny and dogma.