In "The Uses and Abuses of History," Nietzsche is speaking of the harm our memories (only humans have histories) do to us if we cannot absorb them and continue with living. Grudges kill:
But how can the mind of, say, Denmark or Yale and Mizzou be able to cope with the mind of ISIS?There is a degree of insomnia, of rumination, of the historical sense, through which living comes to harm and finally is destroyed, whether it is a person or a people or a culture.
Who said it, Trotsky? "You may not be interested in war, but war is interested in you."
Hard times for the Enlightenment. Fantasy is in the saddle.