ἀνδρὸς σπλάγχνον ἐκμαθεῖν → learn a man's heart, learn a man's inward nature
εσσα, εν, poet.for sq., AP9.122 (perh. Evenus).
[Seite 10] εσσα, εν, poet. = λάλος, Euen. 13 (IX, 122).