and its hand is like a stain upon you still.
While we're on the subject of the Doctor it occurs to me that Doctor Who is the only work of science fiction of which I am aware other than Justin Leiber's Beyond Rejection and (ahem) my own books that deals with the plain and medically evident fact that human cognition and identity and personality is based at least as much in the meat and its physical structures as it in in the electrical impulses imposed thereon.