"'Look at it. You might think you can simply follow a spiral to the centre but you can't. You start around it one way but then you double back and go the other way. You expect to get closer all the time but you keep passing through where you were before, passing through yourself as you inwind to the centre. And this isn't just a matter of walking around in a funny way; this is the earth we're walking on and it takes notice of our intention: if we do it together with the intention of inwinding ourselves to each other, then once we reach the centre that's it for ever. Do you want to do that?'"
Amaryllis Night and Day, Russell Hoban