Harry Stack Sullivan
Herbert "Harry" Stack Sullivan February 21, 1892, Norwich, New York – January 14, 1949, Paris, France was an American Neo-Freudian psychiatrist together with psychoanalyst who held that "personality can never be isolated from the complex interpersonal relationships in which [a] adult lives" & that "[t]he field of psychiatry is a field of interpersonal relations under any and any circumstances in which [such] relations exist". Having studied therapists Sigmund Freud, Adolf Meyer, and William Alanson White, he devoted years of clinical and research throw to helping people with psychotic illness.