Once Roger and Jessica might have stopped. But they’re both alumni of the Battle of Britain, both have been drafted into the early black mornings and the crying for mercy, the dumb inertia of cobbles and beams, the profound shortage of mercy in those days. . . . By the time one has pulled one’s nth victim or part of a victim free of one’s nth pile of rubble, he told her once, angry, weary, it has ceased to be that personal . . . the value of n may be different for each of us, but I’m sorry: sooner or later . . .