Beatles songs, Across the Universe

JOHN 1980: 'I was a bit more artsy-fartsy there.
I was lying next to my first wife in bed, (song originally written in 1967) you know, and I was irritated.
She must have been going on and on about something and she'd gone to sleep – and I kept hearing these words over and over, flowing like an endless stream.
I went downstairs and it turned into a sort of cosmic song rather than an irritated song – rather than 'Why are you always mouthing off at me?' or whatever, right? …and I've sat down and looked at it and said, 'Can I write another one with this meter?' It's so interesting.
'Words are flowing out like endless rain into a paper cup/ They slither while the pass, they slip away across the universe.' Such an extraordinary meter and I can never repeat it! It's not a matter of craftsmanship – it wrote itself.
It drove me out of bed.
I didn't want to write it… and I couldn't get to sleep until I put it on paper… It's like being possessed – like a psychic or a medium.
The thing has to go down.
It won't let you sleep, so you have to get up, make it into something, and then you're allowed to sleep.
That's always in the middle of the night when you're half-awake or tired and your critical facilities are switched off.'