Talking of the influence of Cambridge on ways of thought, I went last night to a dinner to mark the fact that Nick Serota is getting a Cambridge honorary degree.   He was an undergraduate at Christ’s the year below Simon Schama (they had been to the same school), switched from economics to art history at a time when very few people studied the subject, and spoke of two formative influences:  the first was Jim Ede living in Kettle’s Yard and lending works of art to undergraduates to hang in their rooms (Serota borrowed a Gaudier-Brzeska);  and the second was Michael Jaffé who stood undergraduates in front of works of art in the Fitzwilliam and compelled them to talk about them.