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Allan David Bloom (September 14, 1930 - October 7, 1992) was an American philosopher, classicist, and academician. He studied under David Grene, Leo Strauss, Richard McKeon, and Alexandre Kojeve. He subsequently taught at Cornell University, the University of Toronto, Yale University, Ecole Normale Superieure of Paris, and the University of Chicago. Bloom championed the idea of Great Books education and became famous for his criticism of contemporary American higher education, with his views being expressed in his bestselling 1987 book, The Closing of the American Mind.

Allan Bloom was born in Indianapolis, Indiana in 1930 to second-generation Jewish parents who were both social workers. The couple had a daughter, Lucille, two years earlier. As a thirteen-year-old, Bloom read a Readers Digest article about the University of Chicago and told his parents he wanted to attend; his parents thought it was unreasonable and did not encourage his hopes. Yet, when his family moved to Chicago in 1944, his parents met a psychiatrist and family friend whose son was enrolled in the University of Chicago's humanities program for gifted students. In 1946, Bloom was accepted to the same program, starting his degree at the age of fifteen, and spending the next decade of his life enrolled at the University in Chicago's Hyde Park neighborhood. This began his lifelong passion for the 'idea' of the university.  In the preface to Giants and Dwarfs: Essays, 1960-1990, he stated that his education "began with Freud and ended with Plato". The theme of this education was self-knowledge, or self-discovery--an idea that Bloom would later write, seemed impossible to conceive of for a Midwestern American boy. He credits Leo Strauss as the teacher who made this endeavor possible for him.  Bloom graduated from the University of Chicago with his Bachelor's Degree at the age of 18. One of his college classmates was the classicist Seth Benardete. For post-graduate studies, he enrolled in the University of Chicago's Committee on Social Thought, where he was assigned Classicist David Grene as tutor, and went on to write his thesis on Isocrates. Grene recalled Bloom as an energetic and humorous student completely dedicated to studying classics, but with no definite career ambitions. The Committee was a unique interdisciplinary program that attracted a small number of students due to its rigorous academic requirements and lack of clear employment opportunities after graduation. Bloom earned his Ph.D. from the Committee on Social Thought in 1955. He subsequently studied under the influential Hegelian philosopher Alexandre Kojeve in Paris, whose lectures Bloom would later introduce to the English-speaking world. While teaching philosophy at the Ecole Normale Superieure in Paris, he befriended Raymond Aron, amongst many other philosophers. Among the American expatriate community in Paris his friends included leftist writer Susan Sontag.
Allan Bloom