There was a book launch tonight for not one, but two new books by Michael Craig-Martin:  one a book which I couldn’t afford on DRAWING and another, which I could, On Being an Artist, which consists of a whole series of short texts which he has written over the years, some published, many of them notes or computerised aide-memoires.   He writes with admirable simplicity and clarity about his life, his experiences, and his attitudes to the practice of art.