ἐν πέτροισι πέτρον ἐκτρίβων → by grinding stone against stones
τὸ ἀνθρώπινον, ἀγέλη, ἀνθρωπία, ἀνθρωπισμός, ἀνθρωπότης, βίος, ἄνθρωποι
