μέτρον γὰρ τοῦ βίου τὸ καλόν, οὐ τὸ τοῦ χρόνου μῆκος → for life's measure is its beauty not its length (Plutarch, Consolatio ad Apollonium 111.D.4)
compulsory: P. βίαιος, P. and V. ἀναγκαῖος.
cogent: P. and V. πιθανός, P. ἀναγκαῖος (Thuc. 4, 60).
firm, strong: Met., P. ἰσχυρός.
