Fr. 3 Seneca the Elder ( Donat. Vita Vergilii, 29.)
“Seneca reports that Julius Montanus was in the habit of saying that he would have stolen certain things from Vergil if he could have his voice, and comportment, and dramatic ability. [He added] that the same verses sounded beautifuly when Vergil was reciting but without him they were meaningless and mute.”
3. Et Seneca tradidit Iulium Montanum poetam solitum dicere involaturum se Vergilio quaedam, si et vocem posset et os et hypocrisin; eosdem enim versus ipso pronuntiante bene sonare, sine illo inanes esse mutosque.