We will not return No one must leave here and so carry to the world, together with the sign impressed on his skin, the evil tidings of what man's presumption made of man in Auschwitz

Dawn came on us like a betrayer; it seemed as though the new sun rose as an ally of our enemies to assist in our destruction.

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.

The living are more demanding; the dead can wait.

At that time I had not yet been taught the doctrine I was later to learn so hurriedly in the Lager: that man is bound to pursue his own ends by all possible means, while he who errs but once pays dearly

Did chemistry theorems exist? No: therefore you had to go further, not be satisfied with the quia, go back to the origins, to mathematics and physics. The origins of chemistry were ignoble, or at least equivocal: the dens of the alchemists, their abominable hodgepodge of ideas and language, their confessed interest in gold, their Levantine swindles typical of charlatans and magicians; instead, at the origin of physics lay the strenuous clarity of the West-Archimedes and Euclid.

Man is a centaur, a tangle of flesh and mind, divine inspiration and dust.