Following the bestselling 'Summer of a Dormouse', Sir John Mortimer - playwright, novelist, octogenarian and erstwhile QC - offers up more lessons in living and growing old disgracefully What would we like to leave to our descendants? Not a third-rate painting of our PEPs, according to Sir John, but a love of Shakespeare, a taste for alcohol, the ability to defeat boredom, the importance of never locking the lavatory door, and so on