Arthur Koestler (UK: , US: ; German: [ˈaʁtuːɐ̯ ˈkœstlɐ]; Hungarian: Kösztler Artúr [ˈkøstlɛr ˈɒrtuːr]; 5 September 1905 – 1 March 1983) was an Austro-Hungarian-born author and journalist. Koestler was born in Budapest, and was educated in Austria, apart from his early school years. In 1931, Koestler joined the Communist Party of Germany but resigned in 1938 after becoming disillusioned with Stalinism. Having moved to Britain in 1940, Koestler published his novel Darkness at Noon, an anti-totalitarian work that gained him international fame. Over the next 43 years, Koestler espoused many political causes and wrote novels, memoirs, biographies, and numerous essays.