A reader writesMy Dear Grindlay, My how you take offence so! Your plaintive comments about being excluded from the Eurex Serpentine Gallery party almost had me feeling sorry for you. But you are quite in error to think that you were excluded from our party because of a one publication, one guest rule. The real reason you personally were not invited is that we have a drinks budget and I'm afraid your presence would have pushed us way over any limit. Also, valuable and beautiful works of art were all around us and your reputation in such circumstances is dubious. Surely you can't possibly have forgotten an earlier party you attended and the incident involving Picasso's 'Night Life in Paris,' a purloined pint of flaming sambuca and two of the waitresses? (The painting is almost fully restored but I'm afraid Kirstie will never roller-skate again and Anna has been very...