… sapias, vina liques, et spatio brevi spem longam reseces. Dum loquimur, fugerit invida aetas: carpe diem, quam minimum credula postero. — “Be wise, strain the wine, and prune back long hope to a short span. While we talk, envious time will have fled: seize the day, trusting as little as possible in the future.”
The famous two words “carpe diem” are only the first half of Horace’s clause; the rider “quam minimum credula postero” is what carries his actual point about the uncertain future.
✓Public domain
Horace’s Odes were published in 23 BC, so the Latin original has been in the public domain for two millennia. “Seize the day, trusting as little as possible in the future” is a standard literal English rendering of the line with no single copyright claimant; any specific modern verse translation would carry its own status, though the classic Conington rendering (1863) is itself long public-domain.
⚠ This reflects the original work, which is public domain. If your exact English wording comes from a specific modern translation, that translation may itself still be under copyright — check the edition you quote.