Prometheus Bound, and other poems/Sonnets from the Portuguese/Sonnet 19
XIX.
The soul's Rialto hath its merchandise;
I barter curl for curl upon that mart;
And from my poet's forehead to my heart,
Receive this lock which outweighs argosies,—
As purply black, as erst to Pindar's eyes
The dim purpureal tresses gloomed athwart
The nine white Muse-brows. For this counterpart, . .
The bay-crown's shade, Beloved, I surmise,
Still lingers on thy curl, it is so black!
Thus, with a fillet of smooth-kissing breath,
I tie the shadow safe from gliding back,
And lay the gift where nothing hindereth,
Here on my heart as on thy brow, to lack
No natural heat till mine grows cold in death.