Sixth book of the Aeneid, hm? Chapter 21 perhaps?

Nox ruit, Aenea; nos flendo ducimus horas.

Hic locus est, partis ubi se via findit in ambas:

dextera quae Ditis magni sub moenia tendit,

hac iter Elysium nobis; at laeva malorum

exercet poenas et ad impia Tartara mittit.

[Night speeds by,

And we, Aeneas, lose it in lamenting.

Here comes the place where cleaves our way in twain.

Thy road, the right, toward Pluto’s dwelling goes,

And leads us to Elysium. But the left

Speeds sinful souls to doom, and is their path

To Tartarus th’ accurst…]