τοῦ εἰδέναι χάριν ἡ πραγματεία → knowledge is the object of our inquiry, the aim of our investigation is knowledge
P. and V. βορρᾶς, ὁ, βορέας, ὁ (Euripides, Cyclops 329, also Ar.), Ar. and P. βόρειον, τό (Vespae 265; Xen., cyn. 8. 1).