Why Grice was fascinated by Grecian scepticism

σκέψις , εως, ἡ, (σκέπτομαι)

A.viewing, perception by the senses, ἡ διὰ τῶν ὀμμάτων ς. Pl.Phd.83a; observation of auguries, Hdn.8.3.7.

II. examination, speculation, consideration, “τὸ εὕρημα πολλῆς σκέψιος” Hp. VM4, cf. Pl.Alc.1.130d; βραχείας ς. Id.Tht.201a; ϝέμειν ς. take thought of a thing, v.l. in E.Hipp.1323; ἐνθεὶς τῇ τέχνῃ ς. Ar.Ra. 974; “ς. ποιεῖσθαι” Pl.Phdr.237d; “ς. προβέβληκας” Id.Phlb.65d; “ς. λόγων” Id.R.336e; ς. περί τινος inquiry into, speculation on a thing, Id.Grg.487e, etc.; “περί τι” Id.Lg.636d; “ἐπὶ σκέψιν τινὸς ἐλθεῖν” X. Oec.6.13.

2. speculation, inquiry, “ταῦτα ἐξωτερικωτέρας ἐστὶ σκέψεως” Arist.Pol.1254a34; ἔξω τῆς νῦν ς. Id.Ph.228a20; οὐκ οἰκεῖα τῆς παρούσης ς. Id.EN1155b9, etc.

3. hesitation, doubt, esp. of the Sceptic or Pyrthonic philosophers, AP7.576 (Jul.); the Sceptic philosophy, S.E.P.1.5; οἱ ἀπὸ τῆς ς. the Sceptics, ib.229.

4. in politics, resolution, decree, “συνεδρίον” Hdn.4.3.9, cf. Poll.6.178.