Who said "A man must have courage as a man must have breath."?

This quote is attributed to Jack London.

A man must have courage as a man must have breath. - Jack London

"A man must have courage as a man must have breath."

Jack London Courage

Novelist American 1876–1916

"The proper function of man is to live, not to exist."

"I would rather be ashes than dust."

"You can't wait for inspiration. You have to go after it with a club."

"The wise man doesn't give the right answers, he possesses the right questions."

"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."