Catholic Crusade

The origin of the Crusades is directly traceable to the moral and political condition of Western Christendom in the eleventh century. At that time Europe was divided into numerous states whose sovereigns were absorbed in tedious and petty territorial disputes while the emperor, in theory the temporal head of Christendom, was wasting his strength in the quarrel over Investitures. The popes alone had maintained a just estimate of Christian unity; they realized to what extent the interests of Europe were threatened by the Byzantine Empire and the Mohammedan tribes, and they alone had a foreign policy whose traditions were formed under Leo IX and Gregory VII. The reform effected in the Church and the papacy through the influence of the monks of Cluny had increased the prestige of the Roman pontiff in the eyes of all Christian nations; hence none but the pope could inaugurate the international movement that culminated in the Crusades. But despite his eminent authority the pope could never have persuaded the Western peoples to arm themselves for the conquest of the Holy Land had not the immemorial relations between Syria and the West favoured his design. Europeans listened to the voice of Urban II because their own inclination and historic traditions impelled them towards the Holy Sepulchre.

From the end of the fifth century there had been no break in their intercourse with the Orient. In the early Christian period colonies of Syrians had introduced the religious ideas, art, and culture of the East into the large cities of Gaul and Italy. The Western Christians in turn journeyed in large numbers to Syria, Palestine, and Egypt, either to visit the Holy Places or to follow the ascetic life among the monks of the Thebaid or Sinai. There is still extant the itinerary of a pilgrimage from Bordeaux to Jerusalem, dated 333; in 385 St. Jerome and St. Paula founded the first Latin monasteries at Bethlehem. Even the Barbarian invasion did not seem to dampen the ardour for pilgrimages to the East. The Itinerary of St. Silvia (Etheria) shows the organization of these expeditions, which were directed by clerics and escorted by armed troops. In the year 600, St. Gregory the Great had a hospice erected in Jerusalem for the accommodation of pilgrims, sent alms to the monks of Mount Sinai ("Vita Gregorii" in "Acta SS.", March 11, 132), and, although the deplorable condition of Eastern Christendom after the Arab invasion rendered this intercourse more difficult, it did not by any means cease.