Seneca the Elder, Controversiae 7.72
I used to tell you that Cestius, because he was Greek, suffered because of a lack of Latin words though he had an abundance of ideas. Thus, whenever he dared to describe something more broadly, he often stalled especially when he attempted to imitate some great genius.
This is the issue in this controversy. For, in his story, when he was telling about how his brother was given to him, he was pleased by this lonely and sad description: “night was laid out, and everything, judges, was singing under silent stars.” Julius Montanus, who was a companion of Tiberius and an exceptional poet, was claiming that he wanted to imitate Vergil’s line: “it was night and all the tired animals over the earth, the races of birds and beasts, were held by a deep sleep.”
Soleo dicere vobis Cestium Latinorum verborum inopia hominem Graecum laborasse, sensibus abundasse; itaque, quotiens latius aliquid describere ausus est, totiens substitit, utique cum se ad imitationem magni alicuius ingeni derexerat, sicut in hac controversia fecit. Nam in narratione, cum fratrem traditum sibi describeret, placuit sibi in hac explicatione una et infelici: nox erat concubia, et omnia, iudices, canentia sideribus muta erant. Montanus Iulius, qui comes fuit , egregius poeta, aiebat illum imitari voluisse Vergili descriptionem:
nox erat et terras animalia fessa per omnis,alituum pecudumque genus, sopor altus habebat