Beyond their music itself, their greatest strengths were clarity of image and the way they balanced. It’s a truism that no pop format is any good unless it can be expressed in one sentence, but the Beatles went beyond that, they could each be said in one word: Lennon was the brutal one, McCartney was the pretty one, Ringo Starr was the lovable one, Harrison was the balancer. And if Lennon was tactless, McCartney was a natural diplomat. And if Harrison seemed dim, Lennon was very clever. And if Starr was clownish, Harrison was almost sombre. And if McCartney was arty, Starr was basic. Round and round in circles, no loose ends left over, and it all made for a comforting sense of completeness.
Completeness, in fact, was what the Beatles were all about. They were always perfectly self-contained, independent, as if the world was split cleanly into two races, the Beatles and everyone else, and they seemed to live off nobody but themselves.
There is a film of their first American press conference that expresses this perfectly. Hundreds of newsmen question them, close in and batter and hassle them but the Beatles aren’t reached. They answer politely, they make jokes, they’re most charming, but they’re never remotely involved, they’re private. They have their own club going and, really, they aren’t reachable. They are, after all, the Beatles. –The Daily Beast.