Herbert "
Harry"
Stack Sullivan (February 21, 1892,
Norwich, New York – January 14, 1949,
Paris,
France) was an American
Neo-Freudian psychiatrist and
psychoanalyst who held that the personality lives in, and has his or her being in, a complex of interpersonal relations. Having studied therapists
Sigmund Freud,
Adolf Meyer, and
William Alanson White, he devoted years of clinical and research work to helping people with psychotic illness.