Everyone divided the world into us and them, the people for whom one cared and fought, and the people whose interests one might disregard. One’s family, of course, or the friends so close as to be family, and then expanding circles of care and duty. Some looked out for the interests of their own neighbours, their class and society and damn the rest; some extended their duty of care to entire professions. Some fought for larger groups: the children of London, the poor and sick of England, an entire subcontinent.
