Two young people emboding the two opposite polar instances of judaism meet in Brooklyn during the second world war in the course of a baseball game that soon turns into an holy battle.
Reuven, the son of a talmudic scholar, is perceived by Danny, a radical chassidim, as an apicoros, an heretic that dares profaning the holy language by letting himself being schooled in hebrew rather than in yiddish.
The wound that Danny inflicts upon Reuven in the game is a symbolic mutilation, the sign of the tension between moderation and radicalism, the distancing culture of doubt and the deeply involving practise of mystical belief.
The book traces a tale of an exchange of identities, whereby the two characters embark in a dense intellectual and emotional friendship that finally enables them to exchange their personalities: Reuven's scholarship turns from science to a rabbinic drive. Whereas Danny, the rabbi to be, chooses, as a final challange to his previously received mysticism, to further his interest for freudian theories with a secular college education.
Potok's narrative operates,rather than true words, via successive waves of silence. The culture of silence enforced by one of the fathers promts the characters (and with them the community of readers) to dig inside themselves in search of their sometimes submerged humanity. Silence, the tension of the countless silent pauses, links biologically fathers and sons to the extent that, in spite of the dogmatism of their surrounding enviroments, the two characters carve up a space to listen to their own true vocation.
Chaim's work stands out also as an appraisal of scholarhsip, of the fine quality of the character's skills in focusing on the quality,rather than the quantity, of their knowledge and read a line one thousand times so that, through an aleph, through a single letter or a combination of chabbalistic devices, we may see the universe.