Great insight on the contentious subject of co-writing:
It’s not a question of forcing inspiration. It’s finding inspiration that’s already there. To me, forced inspiration a lot of times is ‘oh, I got this idea last night and I’m writing with this person. So this is the idea we’re going to write. That’s pretty contrived already going into it. What happens with me is I write every day and pretty soon you kind of go through your idea box and pretty soon you’re just there. Today, I’m suppose to write a song and maybe you write with a co-writer. It starts off with I went to see this movie last week and it was about this and this and it reminded me of this girl I dated in high school and her dad was this. All of a sudden you stumble upon one of those little truths in life or something.
from this interview