Paul McCartney

I remember once in junior high school, on a Friday, my mom came home from work and said to my brother and I, 'You know, between us, we have only 27 cents, but we have food in the refrigerator, we have our little garden out back, and we're happy, so we are rich.'

When I have a creative insight, there is a high. I think back in the day, I made music as much as I did because it made me feel so good. I think you could argue that there is a creative addiction - but, you know, the healthy kind.