Ernest André Gellner (9 December 1925 – 5 November 1995) was a French-born British-Czech philosopher and social anthropologist. Central themes in his social thought included modernisation theory and nationalism, the latter of which he developed into a leading theory (Gellner's theory of nationalism). His multicultural perspective allowed him to engage with the Western world, the Muslim world, and Russian civilization.

His first book, Words and Things (1959), sparked a leading article in The Times, which then published a month-long correspondence on his analytical critique of linguistic philosophy. Gellner served for 22 years as Professor of Philosophy, Logic and Scientific Method at the London School of Economics, eight years as the William Wyse Professor of Social Anthropology at the University of Cambridge, and later headed the new Centre for the Study of Nationalism in Prague.

Throughout his career, in writing, teaching and political activism, Gellner challenged what he saw as closed systems of thought. At his death, The Independent called him a "one-man crusader for critical rationalism", and The Daily Telegraph called him one of the world's most vigorous intellectuals.

Background

Gellner was born in Paris to Anna, née Fantl, and Rudolf, a lawyer, an urban intellectual German-speaking Austrian Jewish couple from Bohemia (which, since 1918, was part of the newly established Czechoslovakia). Julius Gellner was his uncle. He was brought up in Prague, attending a Czech language primary school before entering the English-language grammar school. This was Franz Kafka's tricultural Prague: antisemitic but "stunningly beautiful", a city he later spent years longing for.

In 1939, when Gellner was 13, the rise of Adolf Hitler in Germany persuaded his family to leave Czechoslovakia and move to St Albans, just north of London, where Gellner attended St Albans Boys Modern School, now Verulam School (Hertfordshire). At the age of 17, he won a scholarship to Balliol College, Oxford, as a result of what he called "Portuguese colonial policy", which involved keeping "the natives peaceful by getting able ones from below into Balliol."

Leonard Trelawny Hobhouse had preceded Ginsberg as Martin White Professor of Sociology at the LSE. Hobhouse's Mind in Evolution (1901) had proposed that society should be regarded as an organism, a product of evolution, with the individual as its basic unit, the subtext being that society would improve over time as it evolved, a teleological view that Gellner firmly opposed.