Note 70 — Chapter VI · OF REASON AND SPEECH.
Reading edition
οἱ Στωϊκοὶ τήνδε (sc. Aristotelis) τὴν κοινὴν αἴσθησιν ‘ἐντὸς ἁφὴν’ προσαγορεύουσι, καθ’ ἣν καὶ ἡμῶν αὐτῶν ἀντιλαμβανόμεθα Aët. plac. iv 8, 7; ‘quid de tactu, et eo quidem quem philosophi interiorem vocant aut doloris aut voluptatis?’ Cic. Ac. ii 7, 20. This feeling, if mistaken for the perception of an external object, is an ‘empty twitching’: φαντασία τῶν ἐν ἡμῖν παθῶν· ὃ δὴ κυριώτερον διάκενος ἑλκυσμὸς παρ’ αὐτοῖς καλεῖται Sext. math. vii 241 (Arnim ii 64). See further Hicks, Stoic and Epicurean, p. 110.