Dashiell Hammett

When a man's partner is killed, he's supposed to do something about it.  It doesn't make any difference what you thought of him.  He was your partner and you're supposed to do something about it.

From his 1930 novel, The Maltese Falcon.  These lines are spoken by private eye Sam Spade, who is played by Humphrey Bogart in the classic 1941 movie adaptation of Hammett's novel. 

Spade's partner, Miles Archer, was played by Jerome Cowan, who was born on this date in 1897.  Cowan also played the district attorney who prosecuted Santa Claus in Miracle on 34th Street.

Mary Astor, Humphrey Bogart, Jerome Cowan