Donen was an American filmmaker and choreographer. His most celebrated work was Singin' in the Rain. 
The following is an excerpt for Stephen Silverman's Dancing on the Ceiling: Stanley Donen and His Movies (p. 312):
"Because of my mother," Donen admitted, "I never became religious. I'm an atheist. I don't believe in God. I never did. I don't think it's possible. He made such a bess of it if there is."