C.S. Lewis on DesireSurprised by Joy (Harcourt Brace Jovanovich: 1955), 166.
That walk I now remembered. It seemed to me that I had tasted heaven then. If only such a moment could return! But what I never realized was that it had returned; that the remembering of that walk had also been desire, and only possession in so far as that kind of desire is itself desirable, is the fullest possession we can know on earth; or rather, because the very nature of Joy makes nonsense of our common distinction between having and wanting. There, to have is to want and to want is to have. Thus the very moment when I longed to be so stabbed again, was itself again such a stabbing.