The death of Isaiah Berlin, a British political philosopher, occurred on November 5, 1997. Isaiah Berlin was a prominent figure in twentieth-century political philosophy, whose works had a profound impact on topics such as liberty, pluralism, and the history of political ideas. Born in Riga (now Latvia), he later moved to Britain and spent much of his academic life at the University of Oxford. Berlin's influential essay, "Two Concepts of Liberty," published in 1958, introduced the distinction between positive and negative liberty, a debate that remains central in contemporary political philosophy. His advocacy for value pluralism and his critique of totalitarian ideologies were especially significant. Berlin also served as a professor and as the founding president of Wolfson College at Oxford, playing a key role in the teaching and promotion of political philosophy. He passed away in London at the age of 88, and his death was widely noted in academic and intellectual circles. The inclusion of this event in the 1997 Gregorian calendar was to acknowledge the significance of Berlin's contributions and his lasting influence on modern political thought.