The building had now risen to such a height that it was a very great inconvenience for anyone who had climbed to the top to descend to the ground, and the builders lost much time in going to eat and drink, and suffered great discomfort in the heat of the day. Filippo therefore made arrangements for eating-houses with kitchens to be opened on the cupola, and for wine to be sold there, so that no one had to leave his labour until the evening, which was convenient for the men and very advantageous for the work. Seeing the work making great progress and succeeding so happily, Filippo had grown so greatly in courage that he was continually labouring, going in person to the furnaces where the bricks were being shaped and demanding to see the clay and to feel its consistency, and insisting on selecting them with his own hand when baked, with the greatest diligence. When the stonecutters were working at the stones, he would look at them to see if they showed flaws and if they were hard, and he would give the men models in wood or wax, or[19] made simply out of turnips; and he would also make iron tools for the smiths. He invented hinges with heads, and hinge-hooks, and he did much to facilitate architecture, which was certainly brought by him to a perfection such as it probably had never enjoyed among the Tuscans.
In the year 1423 the greatest possible happiness and rejoicing were prevailing in Florence, when Filippo was chosen as one of the Signori for the quarter of San Giovanni, for May and June, Lapo Niccolini being chosen as Gonfalonier of Justice for the quarter of Santa Croce. And if he is found registered in the Priorista as "Filippo di Ser Brunellesco Lippi," no one need marvel, seeing that he was called thus after his grandfather Lippo, and not "de' Lapi," as he should have been; which method is seen from the said Priorista to have been used in innumerable other cases, as is well known to all who have seen it or who know the custom of those times. Filippo exercised that office and also other magisterial functions that he obtained in his city, wherein he ever bore himself with most profound judgment.
Seeing that the two vaults were beginning to close in on the round window where the lantern was to rise, it now remained to Filippo (who had made many models of clay and of wood for both the one and the other in Rome and in Florence, without showing them) to make up his mind finally which of these he would put into execution. Wherefore, having determined to finish the gallery, he made diverse designs, which remained after his death in the Office of Works; but they have since been lost by reason of the negligence of those officials. In our own day, to the end that the whole might be completed, a part of it was made on one of the eight sides, but by the advice of Michelagnolo Buonarroti it was abandoned and not carried further, because it clashed with the original plan. Filippo also made with his own hand a model for the lantern; this was octagonal, with proportions in harmony with those of the cupola, and it turned out very beautiful in invention, variety, and adornment. He made therein the staircase for ascending to the ball, which was something divine, but, since Filippo had stopped up the entrance with a piece of wood let in below, no one save himself knew of this staircase. And although he was praised and had now overcome the envy and the arrogance of many, he could not prevent all the other masters who were in Florence from setting themselves, at the sight of this model, to make other in various fashions, and finally a lady of the house of Gaddi had the courage to compete with the one made by Filippo. But he, meanwhile, kept laughing at their presumption, and when many of his friends told him that he should not show his model to any craftsmen, lest they should learn from it, he would answer that there was but one true model and that the others were of no account. Some of the other masters had used some of the parts of Filippo's model for their own, and Filippo, on seeing these, would say, "The next model that this man makes will be my very own." Filippo's model was infinitely praised by all; only, not seeing therein the staircase for ascending to the ball, they complained that it was defective. The Wardens determined, none the less, to give him the commission for the said work, but on the condition that he should show them the staircase. Whereupon Filippo, removing the small piece of wood that there was at the foot of the model, showed in a pilaster the staircase that is seen at the present day, in the form of a hollow blow-pipe, having on one side a groove with rungs of bronze, whereby one ascends to the top, putting one foot after another. And because he could not live long enough, by reason of his old age, to see the lantern finished, he left orders in his testament that it should be built as it stood in the model and as he had directed in writing; protesting that otherwise the structure would collapse, since it was turned with the quarter-acute arch, so that it was necessary to burden it with this weight in order to make it stronger. He was not able to see this edifice finished before his death, but he raised it to the height of several braccia, and caused almost all the marbles that were going into it to be well wrought and prepared; and the people, on seeing them prepared, were amazed that it should be possible for him to propose to lay so great a weight on that vaulting. It was the opinion of many ingenious men that it would not bear the weight, and it appeared to them great good-fortune that he had carried it so far, and a tempting of Providence to burden it so heavily. Filippo, ever laughing to himself, and having prepared all the machines and all the instruments that were to be used in building it, spent all his time and thought in foreseeing, anticipating, and providing for every detail, even to the point of guarding against the chipping of the dressed marbles as they were drawn up, insomuch that the arches of the tabernacles were built with wooden protections; while for the rest, as it has been said, there were written directions and models.
How beautiful is this building it demonstrates by itself. From the level of the ground to the base of the lantern it is one hundred and fifty-four braccia in height; the body of the lantern is thirty-six braccia; the copper ball, four braccia; the cross, eight braccia; and the whole is two hundred and two braccia. And it can be said with confidence that the ancients never went so high with their buildings, and never exposed themselves to so great a risk as to try to challenge the heavens, even as this structure truly appears to challenge them, seeing that it rises to such a height that the mountains round Florence appear no higher. And it seems, in truth, that the heavens are envious of it, since the lightning keeps on striking it every day. The while that this work was in progress, Filippo made many other buildings, which we will enumerate below in their order.
With his own hand he made the model of the Chapter-house of S. Croce in Florence, a varied and very beautiful work, for the family of the Pazzi; and the model of the house of the Busini, for the habitation of two families; and also the model of the house and loggia of the Innocenti, the vaulting of which was executed without framework, a method that is still followed by all in our own day. It is said that Filippo was summoned to Milan in order to make the model of a fortress for Duke Filippo Maria, and that he left this building of the Innocenti in charge of Francesco della Luna, who was very much his friend. This Francesco made an architrave-ornament running downward from above, which is wrong according to the rules of architecture. Wherefore Filippo, on returning, reproved him for having done such a thing, and he answered that he copied it from the Church of S. Giovanni, which is ancient. "There is one sole error," said Filippo, "in that edifice, and thou hast followed it." The model of this building, by the hand of Filippo, was for many years in the hands of the Guild of Por Santa Maria, being held in great account because a part of the fabric was still unfinished; but it is now lost. He made the model of the Abbey of the Canons-Regular of Fiesole, for Cosimo de' Medici, the architecture being ornate, commodious, fanciful, and, in short, truly magnificent. The church is lofty, with the vaulting barrel-shaped, and the sacristy, like all the rest of the monastery, has its proper conveniences. But what is most important and most worthy of consideration is that, having to place that edifice on the downward slope of that mountain and yet on the level, he availed himself of the part below with great judgment, making therein cellars, wash-houses, bread-ovens, stables, kitchens, rooms for storing firewood, and so many other conveniences, that it is not possible to see anything better; and thus he laid the base of the edifice on the level. Wherefore he was afterwards able to make the loggie, the refectory, the infirmary, the noviciate, the dormitory, and the library, with the other principal rooms proper to a monastery,