It was the chemistry of a small group of people, and that chemistry was greater than the sum of the parts. And so John kept Paul from being a teenybopper and Paul kept John from drifting out into the cosmos, and it was magic. And George, in the end, I think provided a tremendous amount of soul to the group. I don’t know what Ringo did.
— Steve Jobs on the Beatles, as told to Brent Schlender