“The future of humanity is uncertain, even in the most prosperous countries, and the quality of life deteriorates; and yet I believe that what is being discovered about the infinitely large and infinitely small is sufficient to absolve this end of the century and millennium. What a very few are acquiring in knowledge of the physical world will perhaps cause this period not to be judged as a pure return of barbarism.”

“Sooner or later in life everyone discovers that perfect happiness is unrealizable, but there are few who pause to consider the antithesis: that perfect unhappiness is equally unattainable. The obstacles preventing the realization of both these extreme states are of the same nature: they derive from our human condition which is opposed to everything infinite.”

“Logic and morality made it impossible to accept an illogical and immoral reality; they engendered a rejection of reality which as a rule led the cultivated man rapidly to despair. But the varieties of the man-animal are innumerable, and I saw and have described men of refined culture, especially if young, throw all this overboard, simplify and barbarize themselves, and survive. A simple man, accustomed not to ask questions of himself, was beyond the reach of the useless torment of asking himself why.The harsher the oppression, the more widespread among the oppressed is the willingness, with all its infinite nuances and motivations, to collaborate: terror, ideological seduction, servile imitation of the victor, myopic desire for any power whatsoever… Certainly, the greatest responsibility lies with the system, the very structure of the totalitarian state; the concurrent guilt on the part of individual big and small collaborators is always difficult to evaluate… they are the vectors and instruments of the system’s guilt… the room for choices (especially moral choices) was reduced to zero”

“...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.”

“...the sea's only gifts are harsh blows and, occasionally, the chance to feel strong. Now, I don't know much about the sea, but I do know that that's the way it is here. And I also know how important it is in life not necessarily to be strong but to feel strong, to measure yourself at least once, to find yourself at least once in the most ancient of human conditions, facing blind, deaf stone alone, with nothing to help you but your own hands and your own head...”

“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.”

“Monsters exist, but they are too few in number to be truly dangerous. More dangerous are the common men, the functionaries ready to believe and to act without asking questions.”