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130. Difference between ti/ and ti/s in the predicate.

In questions distinguish between “τί”, the essence of a thing, and “τίς”, the classification of a thing.

τί δ᾽ ἐστὶν χρόνος καὶ τίς αὐτοῦ φύσις . . . ἄδηλόν ἐστι”, ARISTOT. Phys. 4.218 a 31-2; What time is and what its nature does not appear.


DEM.9.16:καὶ μηδεὶς εἴπῃ, τί δὲ ταῦτ᾽ ἐστίν, τί τούτων μέλει τῇ πόλει”;

PLATO, Crat. 398C: δὲ δὴ ἥρως τί ἂν εἴη”; What might “hero” be? Men.71D: “τί φῂς ἀρετὴν εἶναι”; Prot. 312 C:ὅτι δέ ποτε σοφιστής ἐστι, θαυμάζοιμ᾽ ἂν εἰ οἶσθα”.

XEN. Mem. 1.2.43:ταῦτα τί ἐστι; . . . καὶ ταῦτα νόμος ἐστί; . . . καὶ ταῦτα νόμος καλεῖται” .

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