"There is no rationality in the Nazi hatred: it is hate that is not in us, it is outside of man.. We cannot understand it, but we must understand fro… - Primo Levi

... and finally there came the customer we'd always dreamed of, who wanted us as consultants. To be a consultant is the ideal work, the sort from which you derive prestige and money without dirtying your hands, or breaking your backbone, or running the risk of ending up roasted or poisoned: all you have to do is take off your smock, put on your tie, listen in attentive silence to the problem, and then you'll feel like the Delphic oracle. You must then weigh your reply very carefully and formulate it in convoluted, vague language so that the customer also considers you an oracle, worthy of his faith and the rates set by the Chemists' Society.

Interviewer: Is it possible to abolish man's humanity?
Levi: Unfortunately, yes. Unfortunately, yes; and that is really the characteristic of the Nazi lager [concentration camp]. About the others, I don't know, because I don't know them; perhaps in Russia the same thing happens. It's to abolish man's personality, inside and outside: not only of the prisoner, but also of the jailer. He too lost his personality in the lager.
These are two different itineraries, but with the same result, and I would say that only a few had the good fortune of remaining aware during their imprisonment; some regained their awareness of the experience later, but during it, they had lost it; many forgot everything. They did not record their experiences in their mind. They didn't impress on their memory track. Thus it happened to all, a profound modification in their personality. Most of all, our sensibility lost sharpness, so that the memories of our home had fallen into second place; the memory of family had fallen into second place in face of urgent needs, of hunger, of the necessity to protect oneself against cold, beatings, fatigue... all of this brought about some reactions which we could call animal-like; we were like work animals.
It is curious how this animal-like condition would repeat itself in language: in German there are two words for eating. One is essen and it refers to people, and the other is fressen, referring to animals. We say a horse frisst, for example, or a cat. In the lager, without anyone having decided that it should be so, the verb for eating was fressen. As if the perception of the animalesque regression was clear to all.

There are people who wring their hands and call it an abyss, but do nothing to fill it; there are also those who work to widen it, as if the scientist and literary man belong to two different human subspecies, reciprocally incomprehensible, fated to ignore each other and not apt to engage in cross-fertilization.