Running elbow to wrist, clinically straight but raggedly hewn, faded though it was the scar always confused. ‘I did it to know I could,’ he told me once, ‘after that I knew I could do anything.’ I was jealous of his relentless confidence and experimental certainties. ‘Life is a trick,’ he went on, ‘it’s not about what anybody thinks, their reality is irrelevant. Despite our ability to share, create, and converse, we are all in our own way forever isolated. You’ll only ever be you, so striving for something other is pointless.’ But I still wish I was him.