premise: Humphrey Bogart directed the film Casablanca.
hypothesis: Casablanca is a 1942 American romantic drama film directed by Michael Curtiz and based on Murray Burnett and Joan Alison 's unproduced stage play Everybody Comes to Rick 's . The film stars Humphrey Bogart , Ingrid Bergman , and Paul Henreid ; it also features Claude Rains , Conrad Veidt , Sydney Greenstreet , Peter Lorre , and Dooley Wilson . Humphrey DeForest Bogart ( [ ˈboʊgɑrt ] December 25 , 1899January 14 , 1957 ) was an American screen and stage actor whose performances in 1940s films noir such as The Maltese Falcon , Casablanca , and The Big Sleep earned him status as a cultural icon . The next year , his performance in Casablanca ( 1943 ; Oscar nomination ) raised him to the peak of his profession and , at the same time , cemented his trademark film persona , that of the hard-boiled cynic who ultimately shows his noble side .