“If it is true that there is no greater sorrow than to remember ahappy time in a state of misery, it is just as true that calling up amoment of anguish in a tranquil mood, seated quietly at one's desk, isa source of profound satisfaction.”

“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?”

“Today, I think that if for no other reason than that an Auschwitz existed, no one in our age should speak of Providence.”

“It is neither easy nor agreeable to dredge this abyss of viciousness, and yet I think it must be done, because what could be perpetrated yesterday could be attempted again tomorrow, could overwhelm us and our children. One is tempted to turn away with a grimace and close one's mind: this is a temptation one must resist. In fact, the existence of the death squads had a meaning, a message: 'We, the master race, are your destroyers, but you are no better than we are; if we so wish, and we do so wish, we can destroy not only your bodies, but also your souls, just as we have destroyed ours.”

“...better not to do than to do, better to meditate than to act, better his astrophysics, the threshold of the Unknowable, than my chemistry, a mess compounded of stenches, explosions and small futile mysteries. I thought of another moral, more down to earth and concrete, and I believe that every militant chemist can confirm it: that one must distrust the almost-the-same (sodium is almost the same as potassium, but with sodium nothing would have happened_, the practically identical, the approximate, the or-even, all surrogates, and all patchwork. the difference can be small, but they can lead to radically different consequences, like a railroad's switch points; the chemist's trade consists in good part in being aware of these differences, knowing them close up, and foreseeing their effects. And not only the chemist's trade.”

“We who survived the Camps are not true witnesses. This is an uncomfortable notion which I have gradually come to accept by reading what other survivors have written, including myself, when I re-read my writings after a lapse of years. We, the survivors, are not only a tiny but also an anomalous minority. We are those who, through prevarication, skill or luck, never touched bottom. Those who have, and who have seen the face of the Gorgon, did not return, or returned wordless.”

“Pavel interrupted him. “I’ll explain what the Talmund is to you, with an example. Now listen carefully: Two chimneysweeps fall down the flue of a chimney; one comes out all covered with soot, the other comes out clean: which of the two goes to wash himself?” Suspecting a trap, Piotr looked around, as if seeking help. Then he plucked up his courage and answered: “The one who’s dirty goes to wash.” “Wrong,” Pavel said. “The one who’s dirty sees the other man’s face, and it’s clean, so he thinks he’s clean, too. Instead, the clean one see shte soot on the other one’s face, believes he’s dirty himself, and goes to wash. You understand?” “I understand. That makes sense.” “But wait; I haven’t finished the example. Now I’ll ask you a second question. Those two chimneysweeps fall a second time down the same flue, and again one is dirty and one isn’t. Which one goes to wash?” “I told you I understand. The clean one goes to wash.” “Wrong,” Pavel said mercilessly. “When he washed after the first fall, the clean man saw that the water in his basin didn’t get dirty, and the dirty man realized why the clean man had gone to wash. So, this time, the dirty chimneysweep went and washed.” Piotr listened to this, with his mouth open, half in fright and half in curiosity. “And now the third question. The pair falls down the flue a third time. Which of the two goes to wash?” “From now on, the dirty one will go and wash,” “Wrong again. Did you ever hear of two men falling down the same flue and one remaining clean while the other got dirty? There, that’s what the Talmund is like.”