Promises are the uniquely human way of ordering the future, making it predictable and reliable to the extent that this is humanly possible.
For the lesson of such stories [of resistance to Nazi atrocities] is simple and within everybody's grasp. Politically speaking, it is that under conditions of terror, most people will comply but some people will not , just as the lesson of the countries to which the Final Solution was proposed is that "it could happen" in most places but it did not happen everywhere . Humanly speaking, no more is required, and no more can reasonably be asked, for this planet to remain a place fit for human habitation.
Rage is by no means an automatic reaction to misery and suffering as such; no one reacts with rage to an incurable disease or to an earthquake or, for that matter, to social conditions that seem to be unchangeable. Only where there is reason to suspect that conditions could be changed and are not does rage arise.