ἄνθρωπός ἐστι πνεῦμα σαρκί χρώμενον → a human is a spirit furnished with flesh
in a line: P. and V. ἑξῆς, ἐφεξῆς.
keep abreast of, v.: use P. and V. ἕπεσθαι (dat.), συνέπεσθαι (dat.).