Ludi Juvenales
From LSJ
Καλὸν δὲ καὶ γέροντι μανθάνειν σοφά → Addiscere aliquid digna res etiam seni → Auch einem Greis ist etwas Weises lernen Zier
Wikipedia EN
In classical antiquity, the Juvenalia, or Ludi Juvenales (Gr Ἱουβενάλια ὥσπερ τινὰ νεανισκεύματα), were scenic games instituted by Nero in 59 AD, at the age of 21, in commemoration of his shaving his beard for the first time, thus indicating that he had passed from youth into manhood. These games were not celebrated in the circus, but in a private theatre erected in a pleasure-ground (nemus), and consisted of every kind of theatrical performance, Greek and Roman plays, mimetic pieces, and the like.
