Latin was the language used in university education, scholarly writing, and works of literature. By the High Middle Ages, however, no one spoke Latin as his or her first language. The barbarian invasions, the mixture of peoples, and the usual changes in language that occurred over time resulted in a variety of local dialects that blended words and linguistic forms in various ways.

In the High Middle Ages, some authors departed from tradition and began to write in their local dialect, that is, in the everyday language of their region, which linguistic historians call the vernacular. This new vernacular literature gradually transformed some local dialects into literary languages, such as French, German, Italian, and English, while other local dialects, such as Breton and Bavarian, remained means of oral communication.

Stories and songs in the vernacular were composed and performed at the courts of nobles and rulers. In southern Europe, especially in Provence in southern France, poets who called themselves troubadours wrote and sang lyric verses celebrating love, desire, beauty, and gallantry. The songs of the troubadours were widely imitated in Italy, England, and Germany, so they spurred the development of vernacular literature there as well. Drama, derived from the church’s liturgy, emerged as a distinct art form. Actors performed plays based on biblical themes and on the lives of the saints; these dramas were presented in the towns, first in churches and then at the marketplace. By combining comical farce based on ordinary life with serious religious scenes, plays gave ordinary people an opportunity to identify with religious figures and think about their faith.

Beginning in the fourteenth century a variety of evidence attests to the increasing literacy of laypeople. Wills and inventories reveal that many people, not just nobles, possessed books — mainly devotional texts, but also romances, manuals on manners and etiquette, histories, and sometimes legal and philosophical texts. The spread of literacy represents a response to the needs of an increasingly complex society.