Some of the most successful people in the world all have a secret power - their partnerships. It’s not their technical skills or experiences that matter most, it is their ability to partner: to forge deep connections. Our deep connections shape who we are and they are the foundation of a meaningful life as well as the backbone of any successful organization and collaboration. We’ve been on a fifteen-year -long exploration with sixty of the greatest partnerships and collaborations of our time to find out how to nurture relationships with depth and purpose. Through this, we’ve identified a set of common principles to meaningful partnerships of all types: friends, family, business, and romantic. They are also at the center of most great human collaborations, like closing the ozone hole.