Influential acting teacher who mentored many Hollywood stars and was the father of method acting.
He dropped out of high school after the death of his older brother despite being a straight A student.
He founded the Lee Strasberg Theatre and Film Institute in New York City.
He was married to Nora Krecaun in 1926, to Paula Strasberg on March 16, 1934, and to Anna Strasberg in 1967.
He trained the actor Montgomery Clift.