Who said "A man's got to do what a man's got to do."?

This quote is attributed to Randle McMurphy.

A man's got to do what a man's got to do. - Randle McMurphy

"A man's got to do what a man's got to do."

Randle McMurphy

Character in One Flew Over the Cuckoo's Nest

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"You boys are gonna get a chance to start a new life."

"I'd be happy to oblige you."

"I'm a gambling man."

"I need a little help."