 Our loyalty to … larger groups will, however, weaken, or even vanish altogether, when things get really tough. Then people whom we once thought of as like ourselves will be excluded. Sharing food with impoverished people down the street is natural and right in normal times, but perhaps not in a famine, when doing so amounts to disloyalty to one’s family. The tougher things get, the more ties of loyalty to those near at hand tighten, and the more those to everyone else slacken (PCP, 42).