Looking at them even now, with eyes that remember so much of the best art that followed them and took inspiration from them, we can understand the better how delighted Florence must have been with this new picture gallery and how the doors were besieged by sightseers. But greater still was to come. Ghiberti at once received the commission to make two more doors on his own scale for the south side of the Baptistery, and in 1425 he had begun on them. These were not finished until 145P., so that Ghiberti, then a man of seventy-four, had given practically his whole life to the making of four bronze doors. It is true that he did a few other things besides, such as the casket of S. Zenobius in the Duomo, and the Baptist and S. Matthew for Or San Michele; but he may be said justly to live by his doors, and particularly by the second pair, although it was the first pair that had the greater effect on his contemporaries and followers.

Among his assistants on these were Antonio Pollaiuolo (born in 1429), who designed the quail in the left border, and Paolo Uccello (born in 1397), both destined to be men of influence. The bald head on the right door is a portrait of Ghiberti ; that of the old man on the left is his father, who helped him to polish the original competition plaque. Although commissioned for the south side they were placed where they now are, on the east, as being most worthy of the position of honour, and Pisano's doors, which used to be here, were moved to the south, where they now are.

On Ghiberti's workshop opposite S. Maria Nueva, in the Via Bufalini, the memorial tablet mentions Michelangelo's praise that these doors were beautiful enough to be the Gates of Paradise. After that, what is an ordinary person to say? That they are lovely is a commonplace. But they are more. They are so sensitive; bronze, the medium which Horace has called, by implication, the most durable of all, has become in Ghiberti's hands almost as soft as wax and tender as flesh. It does all he asks ; it almost moves; every trace of sternness has vanished from it. Nothing in plastic art that we have ever seen or shall see is more easy and ingratiating than these almost living pictures.

Before them there is steadily a little knot of admirers, and on Sundays you may always see country people explaining the panels to each other. Every one has his favourite among these fascinating Biblical scenes, and mine are Cain and Abel, with the ploughing, and Abraham and Isaac, with its row of fir trees (see opposite page 16). It has been explained by the purists that the, sculptor stretched the bounds of plastic art too far and made bronze paint pictures ; but most persons will agree to ignore that. Of the charm of Ghiberti's mind the border gives further evidence, with its fruits and foliage, birds and woodland creatures, so true to life, and here fixed for all time, so naturally, that if these animals should ever (as is not unlikely in Italy where every one has a gun and shoots at his pleasure everything he sees) become extinct, they could be created again from these designs.

Ghiberti, who enjoyed great honour i-n his life and a considerable salary as joint architect of the dome with Brunelleschi, died three years after the-completion of the second doors and was buried in S. Croce. His place in Florentine art is unique and glorious.

The broken porphyry pillars by these second doors were a gift from Pisa to Florence in recognition of Florence's watchfulness over Pisa while the Pisans were away subduing the Balearic islanders.

The bronze group over Ghiberti's first doors, representing John the Baptist preaching between a Pharisee and a Levite, are the work (either alone or assisted by his master Leonardo da Vinci) of an interesting Florentine sculptor, Giovanni Francesco Rustici (1474-1554), who was remarkable among the artists of his time in being what we should call an amateur, having a competence of his own and the manners of a patron. Placing himself under Verrocchio, he became closely attached to Leonardo, a fellow-pupil, and made him his model rather than the older man. He took his art lightly, and lived, in Vasari's phrase, "free from care," having such beguilements as a tame menagerie (Leonardo, it will be remembered, loved animals too and had a habit of buying small caged birds in order to set them free), and two or three dining clubs, the members of which vied with each other in devising curious and exotic dishes. Andrea del Sarto, for example, once brought as his contribution to the feast a model of this very church we are studying, the Baptistery, of which the floor was constructed of jelly, the pillars of sausages, and the choir desk of cold veal, while the choristers were roast thrushes. Rustici further paved the way to a life free from care by appointing a steward of his estate whose duty it was to see that his money-box, to which he went whenever he wanted anything, always had money in it.

This box he never locked, having learned that he need fear no robbery by once leaving his cloak for two days under a bush and then finding it again. "This world," he exclaimed, "is too good: it will not last." Among, his pets were a porcupine trained to prick the legs of his guests under the table "so that they drew them in quickly" ; a raven that spoke like a human being; an eagle, and many snakes. He also studied necromancy, the better to frighten his apprentices. He left Florence in 1528, after the Medici expulsion, and, like Leonardo, took service with Francis the First. He died at the age of eighty.

I had an hour and more exactly opposite the Rustici group, on the same level, while waiting for the Scoppio del Carro, and I find it easy to believe that Leonardo himself had a hand in the work. The figure of the Baptist is superb, the attitude of his listeners masterly.