If the room is stuffy, and I therefore open a window to air it, and a burglar climbs in, it would be absurd to say, Ah, now he can stay, she is given him a right to the use of her house--for she is partially responsible for his presence there, having voluntarily done what enabled him to get in, in full knowledge that there are such things as burglars, and that burglars burgle.'' It would be still