Longinus

The treatise On the Sublime is one of the most important works of literary criticism ever written. Its author is unknown. The manuscript attributes it to 'Dionysius or Longinus', and it was traditionally ascribed to Cassius Longinus, a third-century AD rhetorician and advisor to Queen Zenobia of Palmyra. Modern scholarship generally dates it to the first century AD and leaves the author anonymous — 'Longinus' is a conventional name.

The treatise asks a deceptively simple question: what makes writing great? The answer involves not technique alone but a quality the author calls hypsos — height, elevation, sublimity. Great writing, he argues, is produced by greatness of mind: noble thoughts, powerful emotion, grand figures, dignified diction, and elevated composition. The examples range from Homer and Demosthenes to the Book of Genesis ('God said, Let there be light: and there was light') — one of the most remarkable moments in ancient literary criticism.

The treatise was rediscovered in the Renaissance and became enormously influential in the seventeenth and eighteenth centuries, shaping Boileau's, Burke's, and Kant's theories of the sublime. It remains one of the few ancient critical works that can still teach a modern reader about the nature of great writing.