Quoted in The Beatles Anthology (Ringo) ↑

With us four it was magical

I felt with us four it was magical and it was telepathy. When we were working in the studio sometimes it was just… it’s indescribable, really. Although there were four of us, there was one of us; all of our hearts were beating at the same time. But the moment you think, ‘Oh, aren’t I playing well!’ then you turn into shit.

Ringo Starr, as quoted in The Beatles Anthology