Even in its purely civic character, it acquired a position which no one of the greater northern monasteries could pretend to, through the building of its bridge in the early fifteenth century. The twin fords crossing this bend of the river were, though direct and important, difficult; when they were once bridged and the bridges joined by the long causeway which still runs across Andersey Island between the old and the new branches of the Thames, travel was easily diverted from the bridge of Wallingford to that at Abingdon, and the great western road running through Farringdon towards the Cotswolds and the valley of the Severn had Abingdon for its sort of midway market town.

These three great Benedictine monasteries form, as it were, the three nurseries or seed plots from which civilisation spread out along the Thames Valley after the destruction wrought by the first and worst barbarian invasions. All three, as we have seen, go back to the very beginning of the Christian phase of English history; the origins of all three merge in those legends which make a twilight between the fantastic stories of the earlier paganism and the clear records of the Christian epoch after the re-Latinisation of England. An outpost beyond these three is the institution of St Frideswides at Oxford. Beyond that point the upper river, gradually narrowing, losing its importance for commerce and as a highway, supported no great monastery, and felt but tardily the economic change wrought by the foundations lower down the stream.

Chertsey and Westminster certainly, and Abingdon very probably, were destroyed, or at least sacked, in the Danish invasions, but their roots lay too deep to allow them to disappear: they re-arose, and a generation before the Conquest were again by far the principal centres of production and government in the Thames Valley. Indeed, with the exception of the string of royal estates upon the banks of the river, and of the town of Oxford, Chertsey, Westminster and Abingdon were the only considerable seats of regulation and government upon the Thames, when the Conquest came to reorganise the whole of English life.

With that revolution it was evident that a great extension not only of the numbers, but especially of the organisation and power, of the monastic system would appear: that gaps left uninfluenced by it in the line of the Thames would be filled up, and all the old foundations themselves would be reconstructed and become new things.

The Conquest is in its way almost as sharp a division in the history of England as is the landing of St Augustine. In some externals it made an even greater difference to this island than did the advent of the Roman Missionaries, though of course, in the fundamental things upon which the national life is built, the re-entry of England into European civilisation in the seventh century must count as a far greater and more decisive event than its first experience of united and regular government under the Normans in the eleventh. Moreover although the Conquest largely changed the language of the island, introduced a conception of law in civil affairs with which the Anglo-Saxon aristocracy were quite unfamiliar, and began to flood England with a Gallic admixture which flowed .uninterruptedly for three hundred years, yet it did not change the intimate philosophy of the people, and it is only the change of the intimate philosophy of a people which can have a revolutionary consequence. The Conquest found England Catholic, vaguely feudal, and, though in rather an isolated way, thoroughly European. The Normans organised that feudality, extirpated whatever was unorthodox, or slack in the machinery of the religious system, and let in the full light of European civilisation through a wide-open door, which had hitherto been half-closed.

The effect, therefore, of the Conquest was exercised upon the visible and mutable things of the country rather than upon the nourishing inward things: but it was very great, and in nothing was it greater than in its inception of new buildings and the use everywhere of stone. Under the Normans very nearly all the great religious foundations of England re-arose, and that within a generation. New houses also arose, and the mark of that time (which was a second spring throughout Europe: full of the spirit of the Crusades, and a complete regeneration of social life) was the rigour of new religious orders, and especially the transformation of the old Benedictine monotony.

Chief, of course, of these religious movements, and the pioneer of them all, was the institution of Cluny in Burgundy.

Cluny did not rise by design. It was one of those spontaneous growths which are characteristic of vigorous and creative times. Those who are acquainted with the Burgundian blood will not think it fantastic to imagine the vast reputation of Cluny to have been based upon rhetoric. It was perhaps the sonorous Burgundian facility for expression and the inheritance of oratory which belonged to Burgundian soil till Bossuet's birth, and which still belongs to it, that gave Cluny a sort of spell over the mind of Western Europe, and which made Cluny a master in the century which preceded the great change of the Crusades. From Cluny as a mother house proceeded communities instinct with the discipline and new life of the reformed order, and though it has been remarked that these communities were not numerous, in comparison to the vigour of the movement, yet it should also be noted that they were nearly always very large and wealthy, that they were in a particular and close relation to the civil government of the district in which each was planted, and that their absolute dependence upon the mother house, and their close observance of one rule, lent the whole order something of the force of an army.

The Cluniac influence came early into the Thames Valley. By the beginning of the twelfth century, and within fifty years of the Conquest, this new influence was found interpolated with and imposed upon the five centuries that had hitherto been wholly dependent upon the three great Benedictine posts. This Cluniac foundation, the first of the new houses on the Thames, was fixed upon the peninsula of Reading.

It was in 1121 that the son of the Conqueror brought the Cluniac order to the little town. From the moment of the foundation of the abbey it attracted, in part by its geographical position, in part by the fact that it was the first great new foundation upon the Thames, and in part by the accident which lent a special devotion or power to one particular house and which was in this case largely due to the discipline and character of the Cluniac order, Reading took on a very high position in England. It had about it, if one may so express oneself, something more modern, something more direct and political than was to be found in the old Benedictine houses that had preceded it. The work it had to do was less material: the fields were already drained, the life and wealth of the new civilisation had begun, and throughout the four hundred years of its existence the function of Reading was rather to entertain the Court, to assist at parliaments, and to be, throughout, the support of the monarchy. It sprang at once into this position, and its architecture symbolised to some extent the rapid command which it acquired, for it preserved to the end the characteristics of the early century in which it was erected: the Norman arch, the dog-tooth ornaments, the thick walls, the barbaric capitals of the early twelfth century.