On the Sublime (Greek: Περì Ὕψους Perì Hýpsous; Latin: De sublimitate) is a Roman-era Greek work of literary criticism dated to the 1st century- C.E.. Its author is unknown, but is conventionally referred to as Longinus (/lɒnˈdʒaɪnəs/; Ancient Greek: Λογγῖνος Longĩnos) or Pseudo-Longinus. It is regarded as a classic work on aesthetics and the effects of good writing. The treatise highlights examples of good and bad writing from the previous millennium, focusing particularly on what may lead to the sublime.