Freud has been compared to Marx by Reich, who saw Freud's importance for psychiatry as parallel to that of Marx for economics, and by Paul Robinson, who sees Freud as a revolutionary whose contributions to twentieth century thought are comparable in importance to Marx's contributions to nineteenth century thought. Fromm calls Freud, Marx, and Einstein the "architects of the modern age", but rejects the idea that Marx and Freud were equally significant, arguing that Marx was both far more historically important and a finer thinker. Fromm nevertheless credits Freud with permanently changing the way human nature is understood. Gilles Deleuze and Félix Guattari write in "Anti-Oedipus" (1972) that psychoanalysis resembles the Russian Revolution in that it became corrupted almost from the beginning. They believe this began with Freud's development of the theory of the Oedipus complex, which they see as idealist.