ἐξεπίσταμαι
Ὥσπερ αὐτοῦ τοῦ ἡλίου μὴ ὄντος καυστικοῦ, ἀλλ' οὔσης ζωτικῆς καὶ ζωοποιοῦ θέρμης ἐν αὐτῷ καὶ ἀπλήκτου, ὁ ἀὴρ παθητικῶς δέχεται τὸ ἀπ' αὐτοῦ ϕῶς καὶ καυστικῶς· οὕτως οὖν ἁρμονίας οὔσης ἐν αὐτοῖς τινὸς καὶ ἑτέρου εἴδους ϕωνῆς ἡμεῖς παθητικῶς ἀκούομεν → Just as although the Sun itself does not cause burning but has a heat in it that is life-giving, life-engendering, and mild, the air receives light from it by being affected and burned, so also although there is a certain harmony and a different kind of voice in them, we hear it by being affected.
English (LSJ)
A know thoroughly, τι Hdt.2.43, 5.93: c. part., know well that .., ἐ. τὸν Κῦρον οὐκ ἀτρεμίζοντα Id.1.190, cf. S.OC1584; τὸν θεὸν τοιοῦτον (sc. ὄντα) ἐ. Id.Fr.771: c. inf., know well how to do, Id.Ant.480: with εὖ, Hdt.3.146, A.Ag.838; καλῶς S.OC417, etc.: c. acc. et inf.; know that, Id.Ant.293. II know by heart, τὸν λόγον Pl.Phdr.228b.