He portrayed Victor Laszlo in Casablanca, which critics have called one of the greatest films of all time. That same year, he starred as Jeremiah Durrance with Bette Davis in Now, Voyager.
He made his stage debut while working with director Max Reinhardt.
He narrowly escaped being in the army during WWII and went on to play a role in Of Human Bondage.
His father was an aristocratic Viennese banker. He was married to Elizabeth Camilla Julia Gluck from 1936 until 1992 and he had two daughters, Monika and Mimi.
He starred in Casablanca with Ingrid Bergman.