Flying out of this world.
But this is you, and you are this: what is formless is the space that opens onto the other side of the head.
A shadow without a body in a cartography of Elsewhere. Lines of flight are everywhere.
I'm not sure if anyone's found this page yet- it's been buried in my bookmarks for about a year now. It's a timeline of early flying machines, with information on each one, excellent pictures, and quite a few links. A gold mine, really.