Herbert Marcuse (German: [maʀˈkuːzə]; July 19, 1898 – July 29, 1979) was a German-American philosopher, sociologist, and political theorist, associated with the Frankfurt School of critical theory. Born in Berlin, Marcuse studied at the universities of Berlin and then at Freiburg, where he received his Ph.D. He was a prominent figure in the Frankfurt-based Institute for Social Research – what later became known as the Frankfurt School. He was married to Sophie Wertheim (1924–1951), Inge Neumann (1955–1972), and Erica Sherover (1976–1979). In his written works, he criticized capitalism, modern technology, historical materialism and entertainment culture, arguing that they represent new forms of social control.After his studies, in the late 1960s and the 1970s he became known as the preeminent theorist of the New Left and the student movements of Germany, France, and the US. Between 1943 and 1950, Marcuse worked in US Government Service, which helped form the basis of his book Soviet Marxism: A Critical Analysis (1958). Celebrated as the ""Father of the New Left"", his best known works are Eros and Civilization (1955) and One-Dimensional Man (1964). His Marxist scholarship inspired many radical intellectuals and political activists in the 1960s and 1970s, both in the U.S. and internationally.