Some tribes [of monkeys] have taken to washing potatoes in the river before eating them, others have not. Sometimes migrating groups of potato-washers meet non-washers, and the two groups watch each other's strange behavior with apparent bewilderment. But unlike the inhabitants of Lilliput, who fought holy crusades over the question at which end to break the egg, the potato-washing monkeys do not go to war with the non-washers, because the poor creatures have no language which would enable them to declare washing a diving commandment and eating unwashed potatoes a deadly heresy.