νέῳ δὲ σιγᾶν μᾶλλον ἢ λαλεῖν πρέπει → it's fitting for a young man to keep silence rather than to speak (Menander)
μακροζωΐα: ἡ, μακροβιότης, Καισάριος 1148, Εὐστ. Πονημάτ. 14. 20.