Psychoanalysis has been interpreted as both radical and conservative. By the 1940s, it had come to be seen as conservative by the European and American intellectual community. Critics outside the psychoanalytic movement, whether on the political left or right, saw Freud as a conservative. Fromm had argued that several aspects of psychoanalytic theory served the interests of political reaction in his "The Fear of Freedom" (1942), an assessment confirmed by sympathetic writers on the right. In "" (1959), Philip Rieff portrayed Freud as a man who urged men to make the best of an inevitably unhappy fate, and admirable for that reason. In the 1950s, Herbert Marcuse challenged the then prevailing interpretation of Freud as a conservative in "Eros and Civilization" (1955), as did Lionel Trilling in "Freud and the Crisis of Our Culture" and Norman O. Brown in "Life Against Death" (1959). "Eros and Civilization" helped make the idea that Freud and Karl Marx were addressing similar questions from different perspectives credible to the left. Marcuse criticized neo-Freudian revisionism for discarding seemingly pessimistic theories such as the death instinct, arguing that they could be turned in a utopian direction. Freud's theories also influenced the Frankfurt School and critical theory as a whole.