Hannah Arendt (1906–1975) was one of the most influential political philosophers of the twentieth century. Born into a German-Jewish family, she was forced to leave Germany in 1933 and lived in Paris for the next eight years, working for a number of Jewish refugee organisations. In 1941 she immigrated to the United States and soon became part of a lively intellectual circle in New York. She held a number of academic positions at various American universities until her death in 1975. She is best known for two works that had a major impact both within and outside the academic community. The first, The Origins of Totalitarianism, published in 1951, was a study of the Nazi and Stalinist regimes that generated a wide-ranging debate on the nature and historical antecedents of the totalitarian phenomenon. The second, The Human Condition, published in 1958, was an original philosophical study that investigated the fundamental categories of the vita activa (labor, work, action). In addition to these two important works, Arendt published a number of influential essays on topics such as the nature of revolution, freedom, authority, tradition and the modern age. At the time of her death in 1975, she had completed the first two volumes of her last major philosophical work, The Life of the Mind, which examined the three fundamental faculties of the vita contemplativa (thinking, willing, judging).

“In an ever-changing, incomprehensible world the masses had reached the point where they would, at the same time, believe everything and nothing, think that everything was possible and that nothing was true. ... Mass propaganda discovered that its audience was ready at all times to believe the worst, no matter how absurd, and did not particularly object to being deceived because it held every statement to be a lie anyhow. The totalitarian mass leaders based their propaganda on the correct psychological assumption that, under such conditions, one could make people believe the most fantastic statements one day, and trust that if the next day they were given irrefutable proof of their falsehood, they would take refuge in cynicism; instead of deserting the leaders who had lied to them, they would protest that they had known all along that the statement was a lie and would admire the leaders for their superior tactical cleverness.”

― Hannah Arendt, The Origins of Totalitarianism