The poem
We are the time. We are the famous metaphor from Heraclitus the Obscure.
We are the water, not the hard diamond, the one that is lost, not the one that stands still.
We are the river and we are that greek that looks himself into the river. His reflection changes into the waters of the changing mirror, into the crystal that changes like the fire.
We are the vain predetermined river, in his travel to his sea.
The shadows have surrounded him. Everything said goodbye to us, everything goes away.
Memory does not stamp his own coin.
However, there is something that stays however, there is something that bemoans.
In this Poem Jorge is alluding to which Greek myth
Heraclitus was a presocratic philosopher whose work remains only in fragments and references by others. (See Plato's Theaetetus, for example). The poem refers to the quote attributed to Heraclitus that one can never step into the same river twice.