The bond between a man and his profession is similar to that which ties him to his country; it is just as complex, often ambivalent, and in general it is understood completely only when it is broken: by exile or emigration in the case of one's country, by retirement in the case of a trade or profession.

I am constantly amazed by man's inhumanity to man.

Even in this place one can survive, and therefore one must want to survive, to tell the story, to bear witness; and that to survive we must force ourselves to save at least the skeleton, the scaffolding, the form of civilization. We are slaves, deprived of every right, exposed to every insult, condemned to certain death, but we still possess one power, and we must defend it with all our strength for it is the last — the power to refuse our consent.

For he who loses all often easily loses himself.

It is this refrain that we hear repeated by everyone: you are not at home, this is not a sanatorium, the only exit is by way of the Chimney. (What did it mean? Soon we were all to learn what it meant.)

Each of us bears the imprint of a friend met along the way; In each the trace of each.

Conquering matter is to understand it, and understanding matter is necessary to understanding the universe and ourselves: and that therefore Mendeleev's Periodic Table, which just during those weeks we were learning to unravel, was poetry.