Distruggere l'uomo è difficile, quasi quanto crearlo: non è stato agevole, non è stato breve, ma ci siete riusciti, tedeschi. Eccoci docili sotto i v… - Primo Levi

...(he) reminded me by his presence, by his natural and plain manner of being good, that there still existed a just world outside our own, something and someone still pure and whole, not corrupt, not savage, extraneous to hatred and terror; something difficult to define, a remote possibility of good, but for which it was worth surviving.

He was a physicist, more precisely an astrophysicist, diligent and eager but without illusions: the Truth lay beyond, inaccessible to our telescopes, accessible to the initiates. This was a long road which he was traveling with effort, wonderment, and profound joy. Physics was prose: elegant gymnastics for the mind, mirror of Creation, the key to man's dominion over the planet; but what is the stature of Creation, of man and the planet? His road was long and he had barely started up it, but I was his disciple: did I want to follow him?

One of them declared: 'Doing this work, one either goes crazy the first day or gets accustomed to it.' Another, though: 'Certainly I could have killed myself or got myself killed; but I wanted to survive, to avenge myself and bear witness. You mustn't think that we are monsters; we are the same as you, only much more unhappy.