Note 584 — Chapter LXVII · THE DRAMA. — RHETORIC AND DIALECTICS. — THE SOPHISTS.
Reading edition
The satyrical writer Timon (ap. Sext. Emp. ix, 57), speaking in very respectful terms about Protagoras, notices particularly the guarded language which he used in this sentence about the gods; though this precaution did not enable him to avoid the necessity of flight. Protagoras spoke:—
Πᾶσαν ἔχων φυλακὴν ἐπιεικείης· τὰ μὲν οὐ οἱ Χραίσμησ᾽, ἀλλὰ φυγῆς ἐπεμαίετο ὄφρα μὴ οὕτως Σωκρατικὸν πίνων ψυχρὸν πότον Ἀΐδα δύῃ.
It would seem, by the last line as if Protagoras had survived Sokratês.