For good or evil, we are a single people: the more we become conscious of this, the less difficult and long will be humanity’s progress toward justice and peace.

Le differenze possono essere piccole, ma portare a conseguenze radicalmente diverse, come gli aghi degli scambi; il mestiere del chimico consiste in buona parte nel guardarsi da queste differenze, nel conoscerle da vicino, nel prevederne gli effetti. Non solo il mestiere del chimico.

Alongside the liberating relief of the veteran who tells us his story, I now felt in the writing a complex, intense, and new pleasure, similar to that I felt as a student when penetrating the solemn order of differentials calculus. It was exalting to search and find, or create, the right word, that is, commensurate, concise, and strong; to dredge up events from my memory and describe them with the greatest rigor and the least clutter.

For me chemistry represented an indefinite cloud of future potentialities which enveloped my life to come in black volutes torn by fiery flashes, like those which had hidden Mount Sinai. Like Moses, from that cloud I expected my law, the principle of order in me, around me, and in the world. I would watch the buds swell in spring, the mica glint in the granite, my own hands, and I would say to myself: I will understand this, too, I will understand everything.