Nvdvm pactvm - A nude pact an invalid agreement a contract with illusory benefits or without consideration hence unenforceable
Nvllvm qvod tetiget non ornavit - He touched none he did not adorn - not simply 'the Midas touch', or 'he left things better than he found them', but a tribute to a Renaissance man
Nvnc avt nvnqvam - Now or never

Nvnc dimittis

Now let [thy servant] depart - generally any permission to go, specifically to express one's readiness to depart or die

Nvnc pro tvnc - Now for then retroactive
O curas hominum! O quantum est in rebus inane! - Ah, human cares! Ah, how much futility in the world! (Lucilius)
O di immortales! - Good heavens! (uttered by Cicero on the Senate floor)
O diem praeclarum! - Oh, what a beautiful day!
O praeclarum custodem ovium lupum! - An excellent protector of sheep, the wolf! (Cicero)
O quam cito transit gloria mundi! - O how quickly passes the glory of the world!