In the period covered here Isaiah Berlin creates Wolfson College, Oxford; John F. Kennedy becomes U.S. President (and is assassinated); Berlin dines with JFK on the day he is told of the Soviet missile bases in Cuba; the Six-Day Arab-Israeli war of 1967 creates problems that remain with us today; Richard M. Nixon succeeds Johnson as President and resigns over Watergate; and the long agony of the Vietnam War grinds on in the background. At the same time Berlin publishes some of his most important work, including Four Essays on Liberty--the key texts of his liberal pluralism--and the essays later included in Vico and Herder . He appears on the radio, on television, and in documentary films, and gives numerous lectures, especially his celebrated Mellon Lectures, later published as The Roots of Romanticism . Behind these public events is a constant stream of gossip and commentary, acerbic humor, and warm personal feeling. This new volume leaves no doubt that Berlin is one of the very best letter-writers of the 20th century.