"Then as regards the actual connection between spirit and body I consider that the body by reason of being a living body can "attract" and hold on to a "spirit" whilst the body is alive and awake and the two are firmly connected. When the body is asleep I cannot guess what happens but when the body dies the "mechanism" of the body, holding the spirit, is gone and the spirit finds a new body sooner or later perhaps immediately.
As regards the question of why we have bodies at all; why we do not or cannot live free as spirits and communicate as such, we probably could do so but there would be nothing whatever to do. The body provides something for the spirit to look after and use."
- Alan Turing