The first line (of I Am The Walrus) was written on one acid trip one weekend. The second line was written on the next acid trip the next weekend, and it was filled in after I met Yoko.
That is a horrible thing in a way, but it is the one thing poets can bring back to experience, this intense focus on language, which activates words as a portal back into experience. It's a mysterious process that's very hard to articulate, because it's focused entirely on the material of language in a way, but in the interests not just of language itself whatever that would mean - that's the mistake, by the way, that so many so-called "experimental" poets make - but in service to human experience.