Jacques Hassoun was a French psychologist and proponent of the ideas of Jacques Lacan. Hassoun developed a theory of depression and, in his later years, wrote a history of Egyptian Jews, Histoire des Juifs du Nil (Minerve, 1990). Hassoun was born in Alexandria, Egypt in 1936 and settled in France in 1954 to pursue his studies; he ultimately remained there. He died from a brain tumor at age 63, in Paris.