What is the shift in the poem "To Julia de Burgos" and why?

Question

What is the shift in the poem "To Julia de Burgos" and why?

Poem:

(13) To Julia de Burgos --translated by Grace Schulman

The people are saying that I am your enemy,

that in poetry I give you to the world.

They lie, Julia de Burgos. They lie, Julia de Burgos.

The voice that rises in my verses is not your voice: it is my voice;

for you are clothing and I am the essence; 

Between us lies the deepest abyss.

You are bloodless doll of social lies,

And I, the virile spark of human truth.

You are the honey of courtly hypocrisy; 

Not I--

I bare my heart in all my poems.

You, like your world, are selfish; not I--

I gamble everything to be what I am.

You are only the serious lady. Señora. Doña Julia.

Not I. I am life. I am strength. I am woman.

You belong to your husband, your master. Not I: 

I belong to nobody, or to all, for to all, to all

I give myself in my pure feelings and thoughts.

You curl your hair and paint your face. Not I:

I am curled by the wind, painted by the sun. 

You are the lady of the house, resigned, submissive,

tied to the bigotry of men. Not I:

I am Rocinante, bolting free, wildly

snuffling the horizons of the justice of God.

Answer 1

The shift in the poem commences at "You are bloodless doll of social lies." This is the point in the poem at which we start to observe a repetitive pattern in the structure of the poem. The remainder of the poem from the shift onwards follows the "you are..I am" structure, which serves as a contrast between the author of the poem and it's chief object, Julia de Burge.