"Dick Gregory gave Yoko and me a little kind of prayer book. It is in the Christian idiom, but you can apply it anywhere. It is the concept of positive prayer. If you want to get a car, get the car keys. Get it? Imagine is saying that. If you can imagine a world at peace, with no denominations of religion - not without religion but without this my-God-is-bigger-than-your-God thing - then it can be true."