Diocles, fr. 14 (Photius, a247)

“Let no one of you ever long to get old.
Think instead how to die at the right time
Still young and living life well
And how not to wear on to the toothless time of life.”

μηδείς ποθ᾿ ὑμῶν, ἄνδρες, ἐπιθυμησάτω
γέρων γένεσθαι. περινοησάτω δ᾿
ὅπως νέος ὢν ἀγαθόν τι τῆ̣ ψυχῆ̣ παθὼν
ὥρᾳ καταλύσῃ μηδ᾿ ἀγόμφιόν ποτε
αἰῶνα τρίψει

Diocles? So obscure he’s not even one of these.