Religion also flourished in Catholic Europe around 1700, but there were important differences from Protestant practice. First, the visual contrast was striking; baroque art still lavished rich and emotionally exhilarating figures and images on Catholic churches, just as most Protestants had removed theirs during the Reformation. People in Catholic Europe on the whole participated more actively in formal worship than did Protestants.

The tremendous popular strength of religion in Catholic countries can in part be explained by the church’s integral role in community life and popular culture. In addition to the great processional days — such as Palm Sunday, the joyful re-enactment of Jesus’s triumphal entry into Jerusalem — each parish had its own saints’ days, processions, and pilgrimages. Millions of Catholic men and women also joined religious associations, known as confraternities, where they participated in prayer and religious services and collected funds for poor relief and members’ funerals. The Reformation had largely eliminated such festivities in Protestant areas.

Catholicism had its own version of the Pietist revivals that shook Protestant Europe. Jansenism originated with Cornelius Jansen (1585–1638), bishop of Ypres in the Spanish Netherlands, who called for a return to the austere early Christianity of Saint Augustine. In contrast to the worldly Jesuits, Jansen emphasized the heavy weight of original sin and accepted the doctrine of predestination. Although outlawed by papal and royal edicts as Calvinist heresy, Jansenism attracted Catholic followers eager for religious renewal, particularly among the French. Many members of France’s urban elite, especially judicial nobles and some parish priests, became known for their Jansenist piety and spiritual devotion. Such stern religious values encouraged the judiciary’s increasing opposition to the French monarchy in the second half of the eighteenth century. Among the urban poor, a different strain of Jansenism took hold. Prayer meetings brought men and women together in ecstatic worship, and some participants fell into convulsions and spoke in tongues.