And we must remember that [Hitler and Mussolini's] faithful followers, among them the diligent executors of inhuman orders, were not born torturers, … - Primo Levi

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.

The memories which lie within us are not carved in stone; not only do they tend to becomeerased as the years go by, but often they change, or even grow, by incorporating extraneous features. Judges know this very well: almost never do two eyewitnesses of the same event describe it in the same way and with the same words, even if the event is recent and if neither of them has a personal interest in distorting it.

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.

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?