Voi che vivete sicuri Nelle vostre tiepide case, Voi che trovate tornando a sera Il cibo caldo e visi amici: Considerate se questo è un uomo Che lavo… - Primo Levi

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 was fed up with books, which I still continued to gulp down with indiscreet voracity, and searched for a key to the highest truths; there must be a key, and I was certain that, owing to some monstrous conspiracy to my detriment and the world's, I would not get in school. In school they loaded with me with tons of notions that I diligently digested, but which did not warm the blood in my veins. 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, but not the way they want me to. I will find a shortcut, I will make a lock-pick, I will push open the doors."
It was enervating, nauseating, to listen to lectures on the problem of being and knowing, when everything around us was a mystery pressing to be revealed: the old wood of the benches, the sun's sphere beyond the windowpanes and the roofs, the vain flight of the pappus down in the June air. Would all the philosophers and all the armies of the world be able to construct this little fly? No, nor even understand it: this was a shame and an abomination, another road must be found.

"Аз обаче си извлякох друга поука, по-простичка и по-конкретна, и смятам, че всеки радетел на нашата наука би могъл да я потвърди: не бива да имаме вяра на почти същото (натрият е почти същият като калия, но с натрия нищо подобно нямаше да се случи), на практически еднаквото, на приблизителното, на разните "горе-долу" и "или евентуално", на заместителите и кръпките. Макар и нищожни, несходствата могат да доведат до драматично различни резултати - както железопътните стрелки - и голяма част от професията на химика се състои тъкмо в предпазването от такива несходства, в познаването им отблизо, в предвиждането на техните последици. Впрочем нещо, което важи не само за химиците."

Nothing can be said: nothing sure, nothing probable, nothing honest. Better to err through omission than through commission: better to refrain from steering the fate of others, since it is already so difficult to navigate one's own.