Empathy and kindness in these difficult times come more easily to some than others, but I’m trying. I had heart surgery in November to repair a faulty mitral valve. Recovery has been terribly scientific. On my daily walk, a heart monitor is synched with an app on my phone so through earphones I can hear my heart rate as well as encouraging messages in a voice I find indistinguishable from the American cultural critic Bonnie Greer.