The various causes which led to this apparently retrograde movement are still involved in considerable obscurity. The commercial prosperity of the age produced a class who travelled abroad and cultivated the fine arts, with the result that they desired to see erected in England buildings such as they had seen in Rome, Florence, Genoa and Padua. It is generally admitted that the ramifications of Gothic architecture had reached their utmost limit, and the style was getting out of hand, as is seen by the flamboyant buildings on the continent. The revival of classical literature in western Europe gave an impetus to the movement which was largely intended to enfold art within the shelter of an enlightened taste, and protect it from the licence of unordered enthusiasm. How far it succeeded is not a question that can be discussed at length here, but, however good their intentions may have been, the architects used little discrimination in the selection of buildings which were to serve as models for Christian churches, and although subsequently considerable improvements were made, yet, most of the defects in the pagan buildings of the ancients were retained in such as were intended to be utilized for Christian worship, and even considered purely as exercises in architecture it was not until the more chaste remains of antiquity began to be studied that the spirit and harmony of the good examples were attained. A greater contrast than the methods employed by the Gothic mason and the Renaissance architect could not well be imagined. The former shaped his material with his own hands; the foster mother of his art was tradition and its cradle the craftsman's bench; whereas the latter, with no builder's training, worked out his flawless and precise plans in the exotic atmosphere of the office and the study. The practice of making working drawings for every detail of the building was the cause of the decline of ornamental sculpture, with the result that all life and growth in the building ceased. Some authorities are very severe on the Renaissance movement. Dr. Fergusson, in his "_Modern Styles of Architecture_," says: "During the Gothic era the art of building was evolved by the simple exercise of man's reason, with the result that the work of this period is the instinctive natural growth of man's mind. The buildings, on the other hand, which were designed in the imitative styles, and produced on a totally different principle, present us with an entirely different result, and one which frequently degrades architecture from its high position of a quasi-natural production to that of a mere imitative art." [Side note: Inigo Jones and Wren.] Be this as it may, the severe classical style introduced into England by Inigo Jones (who studied in Italy under Palladio), and continued by Sir Christopher Wren, soon swept everything before it.