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From LSJ
Δύο γὰρ, ἐπιστήμη τε καὶ δόξα, ὧν τὸ μὲν ἐπίστασθαι ποιέει, τὸ δὲ ἀγνοεῖν → Two different things are science and belief: the one brings knowledge, the other ignorance
γυμνάζω, συνασκέω, διεξοδεύω, ἐργάζομαι, ἐκτυλίσσω, ἐξελίσσω, ἐξελίττω, ἐξαπλόω, καταμελετάω, ἀπογυμνάζω