Sidney Hook was born and educated in New York City and taught, very early in his career, in the city's public schools. Morris Cohen was among his teachers at City College; he later studied under John Dewey at Columbia University, where he received his Ph.D. in 1927. He immediately began teaching at New York University, where he subsequently served as chairman of the philosophy department at the Washington Square College, head of the graduate department, and head of the all-university department, retiring from this post in May 1968.
An early Marxist in his fervent desire for social reform, Hook was deeply impressed by his teachers Cohen and Dewey. He continued to espouse a form of Marxism that he termed "democratic socialism." Hook was an early anti-Communist, denouncing communism as practiced in the Soviet Union. Hook opposed all intolerant ideologues. For example, he was an early critic of Joseph Stalin, but bitterly opposed the American senator Joseph McCarthy, a major anti-Communist politician of the early 1950s. During the 1960s and 1970s, Hook advocated extremely conservative views on foreign policy and domestic issues. He opposed affirmative action and preferential hiring of minorities.
"As a philosopher, Hook's most distinctive contribution is his theory of democracy. . . .On occasions too numerous to count, Hook has attempted to elucidate the objective meaning of democracy, to canvas the objections raised against it, to marshal the arguments in its behalf, and, as behooves the philosopher, to examine the kinds of theoretical justifications that from time to time come forth in its' support. . . His early books, Towards the Understanding of Karl Marx and From Hegel to Marx, are by far the best expository, interpretive, historical, and critical studies of Karl Marx's thought ever written by an American philosopher. . . .Persistently criticizing the historical determinism of orthodox Marxism, Hook argues that history contains the contingent and the un