Meanwhile art and scholarship remained monastic. The architects were monks and the cathedrals belonged to monks and priests more than to the lawman. Of laymen the almost universal type is the warrior. In 1099, just before the turn of the century, the Crusaders returned. They had come together from all over Europe, and together had seen the world and done their great deeds. Their homecoming issues in a new time, the twelfth century. I have spoken of the Crusade as a tidal wave. The expression is just so far as it suggests its enormous effort. It is also just in that it was a breaker down of barriers, not only the barriers between the divisions of Christendom, which it united in a common effort, but also the barrier between Europe and the East. But the expression of a tidal wave is incorrect in suggesting a levelling and destructive force. For what followed was the continuation and enlargement of what the Norman-Hildebrandine eleventh century had done, with greater riches, complexity and refinement. There appear, also, new forces, but there is no conscious break with the immediate past. In obedience to the returning Crusaders’ new sense of power came increase of commerce and intercommunication, of population and of wealth. Thus government and administration worthy of the name, which had been the creation of the eleventh century, continue to grow stronger and more centralized. But to them is added a new thing, the knowledge of the Roman law, with its large reasoning and its great sense of the State. So also building was continued, and the bases of design do not change, but the severity of the older work begins to be lost in encrusted masses of sculptured detail. Most of the carving strikes us as crude; a good deal of it is meant to be grotesque and much of the rest is grotesque—unintentionally. But there is vigour about it; and an effect of richness, through painstaking repetition of simple motifs. This richness of decorative sculpture links up naturally with the new social tendency to refinement in manners.