Alec guinness

Adam Sisman is sensitive to the charge that a book about an author’s unknown mistresses is simply an exercise in prurience. ‘I am not one of those who believes sex explains everything,’ he declares defensively. An affair with the wife of a close friend led to the ménage depicted in The Naive and Sentimental Lover But this admirably concise volume justifies its title. Sub-themes such as the practice and ethics of biography, and the emotional toll taken by spying, run through it. But its core relates how, when writing his 2015 life of David Cornwell (John le Carré’s real name.) Sisman was prevailed upon to delete details of his subject’s

It is often said that the age of letter-writing is past. This forecast seems to me premature. I have edited three volumes of letters, in each case by writers labelled (though not by me) as ‘the last of their kind’. Yet here is another one, and I feel confident that more will follow. Few now write letters, but those who still do tend to take care what they write. And it will be some decades before we have used up the legacy of the living. John le Carré, who died almost two years ago at the age of 89, was one such. His work is likely to be reassessed over