Note 128 — Chapter III · * OTHER COMPANIONS OF SOKRATES.
Reading edition
Aristot. Topic. i. p. 104, b. 20. θέσις δέ ἐστιν ὑπόληψις παράδοξος τῶν γνωρίμων τινὸς κατὰ φιλοσοφίαν· οἷον ὅτι οὐκ ἔστιν ἀντιλέγειν, καθάπερ ἔφη Ἀντισθένης.
Plato puts this θέσις into the mouth of Dionysodorus, in the Euthydêmus — p. 286 B; but he says (or makes Sokrates say) that it was maintained by many persons, and that it had been maintained by Protagoras, and even by others yet more ancient.
Antisthenes had discussed it specially in a treatise of three sections polemical against Plato — Σάθων, ἢ περὶ τοῦ ἀντιλέγειν, α, β, γ (Diog. L. vi. 16).