@Gabe Martineau it's orignally from Napolean Hill's book Think and Grow Rich. Something like: "coordination of knowledge and effort... between two or more people, who work toward a definite purpose, in the spirit of harmony". Pretty interesting book for mindset stuff. Kind of weird but interesting! Also interesting: Hill claims he worked for FDR in the White House. History says that's made up! https://bayareamastermind.com/power-master-mind-napoleon-hills-think-grow-rich/