He was an erudite classical scholar, an important lecturer at the Amsterdam Talmud Torah, taught at Ets Haim and ran a successful private school.
It was there, that Moses briefly served as a teacher at the Amsterdam Talmud Torah, however in 1641, he, his wife Esther de Castro Tartas, his wife's nephew Isaac de Castro Tartas and about 600 other Dutch Jews, including Isaac Aboab da Fonseca moved to Brazil, following its Dutch colonization.
Although Moses' time in Brazil was short, and following the Portuguese recolonization of the region, he alongside most of the Brazilian Jewish community returned to Amsterdam.
[1][2][3][4][5] He introduced his students to the Trivium, the medieval and Renaissance curriculum of Liberal Arts for the study of Logic, Grammar, and Rhetoric, to educate future generations in the appreciation of literary composition.
His knowledge of logic assisted the teachers of his time, such as Isaac Orobio and Menasseh Ben Israel, in adding understanding and elegant style to the arguments they contributed to the Republic of Letters.