How many times do you go to an exhibition, especially in England, and end up talking to practically every other person in the room whilst looking at art?  Not too often, I suspect!  But that is exactly what happened as I went around a small and remarkable exhibition, "Georgiana Houghton: Spirit Drawings" at the Courtauld Institute of Art.  Each of us was so astonished and fascinated that we all talked to each other at one point or another, standing in front of a drawing, all of us marvelling at these pieces.