A term invented by a 14th-century poet to insult an age he never lived in, describing a decline he judged mostly by how little Latin poetry it produced.

“Dark Ages” is not a term medieval people used about themselves, and it did not originate as neutral periodization. The Italian poet Petrarch coined it in the 1330s, contrasting the “light” of Roman antiquity and his own coming revival with what he saw as the barren “middle” centuries between them, judged largely by the scarcity of classical-style literature. Two centuries later, Cardinal Caesar Baronius gave the phrase a more technical sense, describing the roughly 9th and 10th centuries as saecula obscura for lacking written sources historians could work from, not for lacking achievement. By the Enlightenment, writers like Edward Gibbon fused both senses into a sweeping verdict on the entire post-Roman period, adding an anti-Catholic charge (superstition displacing reason) that had nothing to do with either Petrarch’s or Baronius’s original meaning.

Most professional medievalists today avoid the term, and for good reason. The centuries it names produced the heavy plow and three-field crop rotation that raised European agricultural output, the monastic scriptoria that preserved classical texts through copying rather than losing them, functioning legal codes and long-distance trade networks, and the Carolingian Renaissance’s own deliberate revival of learning under Charlemagne, centuries before Petrarch’s. Historians such as Peter Brown reframed the period as one of transformation and continuity rather than collapse. The label also obscures a real asymmetry: the early medieval West did produce and preserve markedly less written material than Rome had, or than the 12th and 13th centuries would, which is the actual (narrower, defensible) observation the term gets stretched to cover.

The honest position is not to declare the term simply true or simply false, but to notice what work it is doing in a given sentence. As a claim about scarcer surviving documentation and reduced urbanization relative to Rome, “Dark Ages” points at something real. As a claim that the period was uniformly ignorant, stagnant, or culturally empty, it is a value judgment inherited from a 14th-century poet’s literary taste and an 18th-century polemicist’s anti-clerical politics, not a finding of modern scholarship.

Source: Mommsen, Theodore E., “Petrarch’s Conception of the ‘Dark Ages’,” Speculum 17.2 (1942); Brown, Peter, The World of Late Antiquity (1971); Wikipedia, “Dark Ages (historiography).”