ἀποβλεπτέον
From LSJ
ὁ χρόνος ἐστὶ δάνος, τὸ ζῆν πικρός ἐσθ' ὁ δανίσας → time is a loan, and he who lent you life is a hard creditor | time is on loan and life's lender is a prick
English (LSJ)
A one must consider, Gal.11.407.
Greek (Liddell-Scott)
ἀποβλεπτέον: Ῥηματ. ἐπίθ. τοῦ ἀποβλέπω, δεῖ ἀποβλέπειν, Γαλην. τ. 2, σ. 3Β.
Spanish (DGE)
hay que prestar atenciónεἰς τὴν τῆς οὐσίας αὐτοῦ σύστασιν ἀποβλεπτέον Gal.11.407, cf. Hsch.