Erich Fromm, Ph.D. (Sociology, University of Heidelberg, 1922) was a German-American social psychologist, psychoanalyst, sociologist, humanistic philosopher, and democratic socialist. He was a German Jew who fled the Nazi regime and settled in the United States. He was one of the founders of The William Alanson White Institute of Psychiatry, Psychoanalysis and Psychology in New York City and was associated with the Frankfurt School of critical theory.

Fromm explored the interaction between psychology and society, and held various professorships in psychology in the U.S. and Mexico in the mid-20th century.

Fromm's theory is a rather unique blend of Freud and Marx. Freud, of course, emphasized the unconscious, biological drives, repression, and so on. In other words, Freud postulated that our characters were determined by biology. Marx, on the other hand, saw people as determined by their society, and most especially by their economic systems.