The Book of Isaiah by Henry Hardy

Hardy, Henry (ed.). The Book of Isaiah: Personal Impressions of Isaiah Berlin. Woodbridge: The Boydell Press in association with Wolfson College, Oxford, 2009.

Isaiah Berlin by John Gray

Gray, John. Isaiah Berlin. London: HarperCollins; Princeton, 1996: Princeton University Press; retitled Berlin for the paperback edition, London, 1995: Fontana.

“Relativism” by Leo Strauss

Strauss, Leo. ‘Relativism’, in Relativism and the Study of Man. H. Schoeck and J. Wiggins (eds.). Princeton: Van Nostrand, 1961.