What can we say? Paz is a cultured guy. Way cultured, in fact. We're talkin' more cultured than Yoplait! And a poem about poetry is definitely going to have themes of art and culture popping up all over the place. "Proem" mentions poetry, like we said, but also music and philosophy.
Calling ancient Greece! Come in, ancient Greece. Paz attempts to insert his poem into the long tradition of Western culture with references to ancient Greece.
Paz reminds us that poetry is not only a Western art form, but also an indigenous American one by mentioning Netzahualcoyotl. Paz keeps it real, yo.