That compresses the truth a little, but...
"The thing was created in the studio. It’s gobbledygook; Come Together was an expression that Leary had come up with for his attempt at being president or whatever he wanted to be, and he asked me to write a campaign song. I tried and tried, but I couldn’t come up with one. But I came up with this, Come Together, which would’ve been no good to him – you couldn’t have a campaign song like that, right?" -- John Lennon