A xenophobe is averse to alien being. The degree of aversion is proportional to the alienness of the alien.

Two xenophobes from different tribes will go to war over their differing loyalties, beliefs and customs. But at least they share xenophobia (and those tacit fundamental faiths that produce xenophobia).

What happens when a xenophobe encounters a someone who not only tolerates alienness, but seeks and affirms it? — a soul for whom alienness marks a path to transcendence? A soul founded on a faith that everts xenophobia into xenophilia?

For a xenophobe, this exponential alienness — alien even in its fundamental disposition toward the alien — provokes exponential hostility, for which war is insufficiently violent.