The difficulty of Donne’s work had in it a stark moral imperative: pay attention. It was what Donne most demanded of his audience: attention. It was, he knew, the world’s most mercurial resource. The command is in a passage in Donne’s sermon: ‘Now was there ever any man seen to sleep in the cart, between Newgate and Tyburn? Between the prison, and the place of execution, does any man sleep? And we sleep all the way; from the womb to the grave we are never thoroughly awake.’ Awake, is Donne’s cry. Attention, for Donne, was everything: attention paid to our mortality, and to the precise ways in which beauty cuts through us, attention to the softness of skin and the majesty of hands and feet and mouths. Attention to attention itself, in order to fully appreciate its power: Our creatures are our thoughts, he wrote, ‘creatures that are born Giants: that reach from East to West, from earth to Heaven, that do not only bestride all the sea and land, but span the sun and firmament at once: my thoughts reach all, comprehend all.’ We exceed ourselves: it’s thus that a human is super-infinite.