12.2 Longinus' five sources of sublimity

Grandeur of Thought and Emotion

Longinus identified five sources of sublimity in writing, and the first two are closely related: grandeur of thought and powerful emotion. These aren't just decorative features. For Longinus, greatness in literature begins in the mind and heart of the writer before it ever reaches the page. A writer who thinks small will write small, no matter how polished the style.

Grandeur of thought (sometimes called "greatness of conception") refers to the capacity to form lofty, expansive ideas that go beyond ordinary experience. Longinus treats this as the most important source of sublimity. It's not simply about choosing a big topic; it's about the writer's ability to conceive of something in a way that strikes the audience with awe. Homer describing the stride of the gods across mountains, or Sappho cataloguing the physical symptoms of desire with unflinching precision, both reflect minds reaching toward something larger than the everyday.

Vehement and inspired emotion is the second source. Longinus argues that genuine passion, felt deeply and expressed at the right moment, can carry a passage into the sublime on its own. The key word here is genuine. Forced or artificial emotion falls flat. When passion is authentic and well-timed, it fuses with the content and becomes inseparable from it.

How These Two Sources Work in Practice

• Sublime works tend to explore universal themes (mortality, love, the vastness of nature) with exceptional depth rather than surface-level treatment
• Vivid imagery and striking metaphors serve as vehicles for both grand thought and intense feeling
• Hyperbole, when used well, emphasizes the magnitude of an idea or emotion without tipping into absurdity
• Rhetorical questions draw readers into contemplation, making them participants rather than spectators
• Mythological and historical allusions lend weight and resonance, connecting the present moment to something timeless
• Paradox and contrast (juxtaposing the mundane with the extraordinary) can jolt the audience into a new way of seeing

One distinction worth noting: Longinus considers grandeur of thought to be partly innate, a quality of the writer's soul. Emotion, too, arises naturally. But both can be cultivated through sustained engagement with great literature and great ideas. Reading Homer, Plato, and Demosthenes doesn't just teach technique; it enlarges the mind.

Nobility of Expression

The remaining three sources of sublimity deal with craft and style. These are noble diction (the choice of words and figures of speech), dignified word arrangement (how those words are composed into phrases and sentences), and elevated composition (the overall structure and rhythm of the work). Longinus groups these together because they are largely learned skills, unlike the partly natural gifts of great thought and emotion.

Noble Diction

Noble diction means selecting words that carry weight, dignity, or poetic resonance. This doesn't mean stuffing every sentence with rare or archaic vocabulary. Longinus valued the right word in the right place. A well-chosen metaphor or an unexpected but precise term can elevate an entire passage. Figurative language (metaphors, similes, personification) falls under this source as well, since figures of speech transform ordinary expression into something richer.

Some specific rhetorical devices Longinus connects to noble expression:

• Anaphora: repeating words at the start of successive clauses to build rhythm and emphasis
• Chiasmus: inverting the structure of parallel phrases (A-B, B-A) for balance and sophistication
• Polysyndeton: repeating conjunctions ("and... and... and...") to create a sense of accumulation or grandeur
• Apostrophe: directly addressing an absent person, a god, or an abstract concept to heighten emotional drama
• Hendiadys: expressing a single complex idea through two words joined by "and" (e.g., "sound and fury") for poetic compression

Dignified Word Arrangement and Elevated Composition

Word arrangement refers to how clauses and sentences are structured. A periodic sentence, for instance, withholds its main clause until the end, building suspense and directing the reader's attention toward a climactic point. Varying sentence length and rhythm keeps the audience engaged and can mirror the emotional arc of the content.

Elevated composition operates at a higher level, governing how the entire work is organized. The sequencing of ideas, the pacing of arguments, the placement of the most powerful passages: all of these shape the audience's experience. Longinus saw composition as analogous to music. Just as individual notes matter less than the melody they form together, individual words matter less than the pattern they create.

The Five Sources Together

Longinus is clear that these five sources don't operate in isolation. The greatest writing combines all of them: a profound idea, felt with genuine passion, expressed in striking language, arranged with care, and structured to build toward moments of overwhelming impact. No single source guarantees sublimity on its own, but when several converge, the result is writing that, as Longinus puts it, doesn't merely persuade but transports the audience.