“Always be a poet, even in prose”*…

The Knight from the Ellesmere Manuscript of the Canterbury Tales.
In the 13th century, English poetry changed dramatically. There were no battles, no pamphleteering, or Ezra Pound-style polemics, and no warring factions. Yet by the end of the century, a poetic revolution had taken place. Modern readers and writers have long since forgotten what happened back then, but poetry today would not be the same without the 13th century.
In the Middle Ages, three major languages were spoken and written in England: Latin, French, and English. English was the least prestigious but, like the others, it had a thriving literary tradition. Before c1200, there was only one way to write poetry in English, known today as alliterative verse. This is the form of poetry used in Beowulf, Piers Plowman, Sir Gawain and the Green Knight, and approximately 300 other poems…
The revolution of English poetry began toward the end of the 12th century, when poets writing in English invented new metres…
For centuries, alliterative metre was the only way to write poetry in English. Then, rather suddenly, it wasn’t. It’s worth remembering the 13th century as an illustration of the unpredictability of historical change and the evanescence of normal, in literature and in life.
The full story– with lots of lovely examples– at: “The 13th-century revolution that made modern poetry possible.”
* Charles Baudelaire
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As we get high behind change, we might spare a thought for Snorri Sturluson; he died on this date in 1241. A poet, historian, and politician (he was elected twice as lawspeaker at the Icelandic parliament, the Althing), he authored (among other works) the Prose Edda or (Younger Edda).
Snorri is remarkable for proposing (in the Prose Edda) that mythological gods begin as human war leaders and kings whose funeral sites develop cults (a form of euhemerism).