And Virgil explains: Perché s’appuntano i vostri disiri dove per compagnia parte si scema, invidia move il mantaco a’ sospiri.19 “Because your desires point to where sharing lessens each one’s portion, envy moves the bellows to sighing.” The crux is in the words “dove per compagnia parte si scema” (“where sharing lessens each one’s portion”).
They mean this: you sinners, you worldly people, set your hearts on goods which, if divided with others (“per compagnia”, “[by] sharing”), give lesser enjoyment, because each person's part shall be smaller (“parte si scema”, “where sharing lessens each one’s portion”). There is, then, no possibility of sharing (“con-sorte”, [common lot]: “è mestier di consorte divieto”, “where sharing must be forbidden”).