This is part of a much longer poem, one that extends over three full pages in my omnibus edition of Borges' poetry. But it, along with "El otro," "A quien ya no es joven," "Jonathan Edwards (1703-1785)", and "Una mañana de 1649" I have marked down for their references not just to issues of eternity, but also to the ancient Greeks, to American sermons of fire and brimstone, and to a very curious poem that touches upon the last day of King Charles I of England. There is a more subdued tone to these poems when compared to those of Fervor de Buenos Aires, for example. But with this comes a greater subtlety of thought and poetic thoughts that have lingered with me more during this last re-read, compared to the three prior volumes. Although the milongas and tango lyrics presented in Para las seis cuerdas by themselves did not grab my attention, I did find myself wondering how they would have sounded like if they had been put to music and sung.
So, for those readers who have not tried Borges as a poet (not counting those prose poems and short poems found in El Hacedor, I would highly recommend El otro, el mismo as a place to start (I believe there may be an anthology of Borges' poetry that's been translated into English, but I am uncertain). Many of the same themes as those which appear in his most famous works, but cast into poems that often compare well to their prose brethren. Highly recommended.