Who said "The primitive method of settling disputes is to fight."?

This quote is attributed to Jack London.

The primitive method of settling disputes is to fight. - Jack London

"The primitive method of settling disputes is to fight."

Jack London War

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."

"Some battles are worth fighting."

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

"Skynet sent me back through time to kill you."

"War teaches us the value of peace."