Johanna "Hannah" Arendt (/rnt/ or /rnt/; German: [ant]; 14 October 1906 4 December 1975) was a German-born American political theorist. Her 18 books and numerous articles, ranging from works on totalitarianism to thinking and judging, greatly influence political philosophy to this day. Arendt is widely considered one of the most important thinkers of the twentieth century.