" Ah,” said Dr. Hart, “this is a pet theory of my own. The actual ‘he’ is known to nobody.” “Does the actual ‘he’ even exist?” Jonathan returned. “May it not be argued that ‘he’ has no intrinsic reality since different selfs arise out of a conglomeration of selfs to meet different events? "

― Ngaio Marsh , Death and the Dancing Footman (Roderick Alleyn, #11)