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

This quote is attributed to Randle McMurphy.

A man's gotta do what a man's gotta do. - Randle McMurphy

"A man's gotta do what a man's gotta do."

Randle McMurphy Courage

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."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."