Vico's humanism, his interest in classical rhetoric and philology, and his response to Descartes contribute to the philosophical foundations for the second Scienza Nuova. Through an elaborate Latin etymology, Vico establishes not only the distinguishing features of first humans, but also how early civilization developed a sensus communis or collective sense. Beginning with the utterances characteristic of the giganti or early humans, Vico concludes that "first, or vulgar, wisdom was poetic in nature." This observation is not an aesthetic one, but rather points to the capacity for early humans to make meaning via comparison and to reach a communal understanding of their surroundings. Thus, the metaphors that define the poetic age also represent the first civic discourse and, like the eloquence of Vico's own age, engender a civic reality. The poetic principle held, though in altered form, for subsequent formative ages, including early Greek, Roman, and European civilizations.

While the transfer from divine to heroic to human ages is, for Vico, marked by shifts in the tropological nature of language, the inventional aspect of the poetic principle remains constant. When referring to "poets," Vico intends to evoke the original Greek sense of "creators."

Giambattista Vico at wikipedia