BERNINI AND BORROMINI It is important to remember that when Bernini with his South Italian impetuosity won the first place in Roman sculpture and architecture, this infiltration of North Italian elegance had already done its work. His noble colonnades in front of St. Peter's (pL Lxm) have something of the happy openness of Palladian villa architec- ture, in spite of their Roman weight and their Berninesque sculp- tural vigour. For Bernini was the son of a sculptor and himself the greatest sculptor of the Baroque. He incidentally also painted, and as for his reputation as an architect, it was so great that Louis XTV invited him to Paris to design plans for an enlargement of the Louvre Palace. Bernini was as universal as Michelangelo, and nearly as famous. Borromini, on the other hand, was trained as a mason, and, since he was distantly rekted to Maderna, found work in a small way at St. Peter's when he went to Rome at the age of fifteen. There he worked on, humble and unknown, while Bernini created his first masterpiece of Baroque decoration, the bronze canopy under Michelangelo's dome, in the centre of St. Peter's, a huge monument, nearly 100 feet high, and with its four gigantic twisted columns the very symbol of the changed age, of a grandeur without restraint, a wild extravagance, and a luxury of detail that would have been distasteful to Michelangelo. The same vehemence of approach and the same revolutionary disregard of conventions characterise Borromini's first important work, the church of S, Carlo alle Quattro Fontane (pi. LXIV), begun in 1633. The interior is so small that it would fit into one of the piers which support the dome of St. Peter's. But in spite of its miniature size it is one of the most ingenious spatial compositions of the century. It has been said before that the normal plan for longi- tudinal churches of the Baroque was that of the Gesu: nave with side chapels, short transepts and dome over the crossing. It was broadened and enriched by the following generations (S. Ignazio, Rome, 1626 seqq.). But the centralised ground plan was not given up either. It was only the predominance of the circle in central churches which the Baroque discarded in Rome. Instead of the circle the oval was introduced, already in Vignola's S. Anna dei Palafirenieri (fig. 64), a less finite form, and a form that endows the centralised plan with longitudinal elements, i.e. elements suggestive of movement in space. An infinite number of variations on the theme of the oval was de- veloped first by the architects of Italy and then by those of other countries. They constitute the most interesting development of 123