Chapter 7

"In the year 1420, all these foreign masters were at length assembled in Florence, with those of Tuscany, and all the best Florentine artists in design. Filippo likewise then returned from Rome. They all assembled, therefore, in the hall of the wardens of Santa Maria del Fiore, the Syndics and Superintendents, together with a select number of the most capable and ingenious citizens being present, to the end that having heard the opinion of each on the subject, they might at length decide on the method to be adopted for vaulting the tribune. Being called into the audience, the opinions of all were heard one after another, and each architect declared the method which he had thought of adopting. And a fine thing it was to hear the strange and various notions then propounded on that matter: for one said that columns must be raised from the ground up, and that on these they must turn the arches, whereon the woodwork for supporting the weight must rest. Others affirmed that the vault should be turned in cysteolite or sponge-stone (spugna), thereby to diminish the weight; and several of the masters agreed in the opinion that a column must be erected in the centre, and the cupola raised in the form of a pavilion, like that of San Giovanni in Florence. Nay, there were not wanting those who maintained that it would be a good plan to fill the space with earth, among which small coins (quatrini) should be mingled, that when the cupola should be raised, they might then give permission that whoever should desire the soil might go and fetch it, when the people would immediately carry it away without expense. Filippo alone declared that the cupola might be erected without so great a mass of woodwork, without a column in the centre, and without the mound of earth; at a much lighter expense than would be caused by so many arches, and very easily, without any framework whatever.

"Hearing this, the syndics, who were listening in the expectation of hearing some fine method, felt convinced that Filippo had talked like a mere simpleton, as did the superintendents, and all the other citizens; they derided him therefore, laughing at him, and turning away; they bade him discourse of something else, for that this was the talk of a fool or madman, as he was. Therefore Filippo, thinking he had cause of offence, replied, 'But consider, gentlemen, that it is not possible to raise the cupola in any other manner than this of mine, and although you laugh at me, yet you will be obliged to admit (if you do not mean to be obstinate), that it neither must nor can be done in any other manner; and if it be erected after the method that I propose, it must be turned in the manner of the pointed arch, and must be double--the one vaulting within, the other without, in such sort that a passage should be formed between the two. At the angles of the eight walls, the building must be strengthened by the dove-tailing of the stones, and in like manner the walls themselves must be girt around by strong beams of oak. We must also provide for the lights, the staircases, and the conduits by which the rain-water may be carried off. And none of you have remembered that we must prepare supports within, for the execution of the mosaics, with many other difficult arrangements; but I, who see the cupola raised, I have reflected on all these things, and I know that there is no other mode of accomplishing them, than that of which I have spoken.' Becoming heated as he proceeded, the more Filippo sought to make his views clear to his hearers, that they might comprehend and agree with him, the more he awakened their doubts, and the less they confided in him, so that, instead of giving him their faith, they held him to be a fool and a babbler. Whereupon, being more than once dismissed, and finally refusing to go, they caused him to be carried forcibly from the audience by the servants of the place, considering him to be altogether mad. This contemptuous treatment caused Filippo at a later period to say, that he dared not at that time pass through any part of the city, lest some one should say, 'See, where goes that fool!' The syndics and others forming the assembly remained confounded, first, by the difficult methods proposed by the other masters, and next by that of Filippo, which appeared to them stark nonsense. He appeared to them to render the enterprise impossible by his two propositions--first, by that of making the cupola double, whereby the great weight to be sustained would be rendered altogether unmanageable, and next by the proposal of building without a framework. Filippo, on the other hand, who had spent so many years in close study to prepare himself for this work, knew not to what course to betake himself, and was many times on the point of leaving Florence. Still, if he desired to conquer, it was necessary to arm himself with patience, and he had seen enough to know that the heads of the city seldom remained long fixed to one resolution. He might easily have shown them a small model which he had secretly made, but he would not do so, knowing the imperfect intelligence of the syndics, the envy of the artists, and the instability of the citizens, who favored now one and now another, as each chanced to please them. And I do not wonder at this, because every one in Florence professes to know as much of these matters, as do the most experienced masters, although there are very few who really understand them; a truth which we may be permitted to affirm without offence to those who are well informed on the subject. What Filippo therefore could not effect before the tribunal, he began to attempt with individuals, and talking apart now with a syndic, now with a warden, and again with different citizens, showing moreover certain parts of his design; he thus brought them at length to resolve on confiding the conduct of this work, either to him or to one of the foreign architects. Hereupon, the syndics, the wardens, and the citizens, selected to be judges in the matter, having regained courage, gathered together once again, and the architects disputed respecting the matter before them; but all were put down and vanquished on sufficient grounds by Filippo, and here it is said that the dispute of the egg arose, in the manner following. The other architects desired that Filippo should explain his purpose minutely, and show his model, as they had shown theirs. This he would not do, but proposed to all the masters, foreigners and compatriots, that he who could make an egg stand upright on a piece of smooth marble, should be appointed to build the cupola, since in doing that, his genius would be made manifest. They took an egg accordingly, and all those masters did their best to make it stand upright, but none discovered the method of doing so. Wherefore, Filippo, being told that he might make it stand himself, took it daintily into his hand, gave the end of it a blow on the plane of the marble, and made it stand upright.[2] Beholding this, the artists loudly protested, exclaiming that they could all have done the same; but Filippo replied, laughing, that they might also know how to construct the cupola, if they had seen the model and design. It was thus at length resolved that Filippo should receive the charge of conducting the work, but was told that he must furnish the syndics and wardens with more exact information.

"He returned, therefore, to his house, and stated his whole purpose on a sheet of paper, as clearly as he could possibly express it, when it was given to the tribunal in the following terms:--'The difficulties of this erection being well considered, magnificent signors and wardens, I find that it cannot by any means be constructed in a perfect circle, since the extent of the upper part, where the lantern has to be placed, would be so vast, that when a weight was laid thereon, it would soon give way. Now it appears to me that those architects who do not aim at giving perpetual duration to their fabrics, cannot have any regard for the durability of the memorial, nor do they even know what they are doing. I have therefore determined to turn the inner part of this vault in angles, according to the form of the walls, adopting the proportions and manner of the pointed arch, this being a form which displays a rapid tendency to ascend, and when loaded with the lantern, each part will help to give stability to the other. The thickness of the vault at the base must be three braccia and three-quarters; it must then rise in the form of a pyramid, decreasing from without up to the point where it closes, and where the lantern has to be placed, and at this junction the thickness must be one braccia and a quarter. A second vault shall then be constructed outside the first, to preserve the latter from the rain, and this must be two braccia and a half thick at the base, also diminishing proportionally in the form of a pyramid, in such a manner that the parts shall have their junction at the commencement of the lantern, as did the other, and at the highest point it must have two-thirds of the thickness of the base. There must be a buttress at each angle, which will be eight in all, and between the angles, in the face of each wall, there shall be two, sixteen in all; and these sixteen buttresses on the inner and outer side of each wall must each have the breadth of four braccia at the base. These two vaults, built in the form of a pyramid, shall rise together in equal proportion to the height of the round window closed by the lantern. There will thus be constructed twenty-four buttresses with the said vaults built around, and six strong high arches of a hard stone (macigno), well clamped and bound with iron fastenings, which must be covered with tin, and over these stones shall be cramping irons, by which the vaults shall be bound to the buttresses. The masonry must be solid, and must leave no vacant space up to the height of five braccia and a quarter; the buttresses being then continued, the arches will be separated. The first and second courses from the base must be strengthened everywhere by long plates of _macigno_ laid crosswise, in such sort that both vaults of the cupola shall rest on these stones. Throughout the whole height, at every ninth braccia there shall be small arches constructed in the vaults between the buttresses, with strong cramps of oak, whereby the buttresses by which the inner vault is supported will be bound and strengthened; these fastenings of oak shall then be covered with plates of iron, on account of the staircases. The buttresses are all to be built of _macigno_, or other hard stone, and the walls of the cupola are, in like manner, to be all of solid stone bound to the buttresses to the height of twenty-four braccia, and thence upward they shall be constructed of brick or of spongite (spugne), as shall be determined on by the masters who build it, they using that which they consider lightest. On the outside, a passage or gallery shall be made above the windows, which below shall form a terrace, with an open parapet or balustrade two braccia high, after the manner of those of the lower tribunes, and forming two galleries, one over the other, placed on a richly decorated cornice, the upper gallery being covered. The rain-water shall be carried off the cupola by means of a marble channel, one third of an ell broad, the water being discharged at an outlet to be constructed of hard stone (pietra forte), beneath the channel. Eight ribs of marble shall be formed on the angles of the external surface of the cupola, of such thickness as may be requisite; these shall rise to the height of one braccia above the cupola, with cornices projecting in the manner of a roof, two braccia broad, that the summit may be complete, and sufficiently furnished with eaves and channels on every side; and these must have the form of the pyramid, from their base, or point of junction, to their extremity. Thus the cupola shall be constructed after the method described above, and without framework, to the height of thirty braccia, and from that height upwards, it may be continued after such manner as shall be determined on by the masters who may have to build it, since practice teaches us by what methods to proceed.'

"When Filippo had written the above, he repaired in the morning to the tribunal, and gave his paper to the syndics and wardens, who took the whole of it into their consideration; and, although they were not able to understand it all, yet seeing the confidence of Filippo, and finding that the other architects gave no evidence of having better ground to proceed on,--he moreover showing a manifest security, by constantly repeating the same things in such a manner that he had all the appearance of having vaulted ten cupolas:--the Syndics, seeing all this, retired apart, and finally resolved to give him the work; they would have liked to see some example of the manner in which he meant to turn this vault without framework, but to all the rest they gave their approbation. And fortune was favorable to this desire: Bartolomeo Barbadori having determined to build a chapel in Santa Felicita, and having spoken concerning it with Filippo, the latter had commenced the work, and caused the chapel, which is on the right of the entrance, where is also the holy water vase (likewise by the hand of Filippo), to be vaulted without any framework. At the same time he constructed another, in like manner, for Stiatta Ridolfi, in the church of Santo Jacopo sopr' Arno; that, namely, beside the chapel of the High Altar; and these works obtained him more credit than was given to his words. The consuls and wardens feeling at length assured, by the writing he had given them, and by the works which they had seen, entrusted the cupola to his care, and he was made principal master of the works by a majority of votes. They would nevertheless not commission him to proceed beyond the height of twelve braccia, telling him that they desired to see how the work would succeed, but that if it proceeded as successfully as he expected, they would not fail to give him the appointment for the remainder. The sight of so much obstinacy and distrust in the syndics and wardens was so surprising to Filippo, that if he had not known himself to be the only person capable of conducting the work, he would not have laid a hand upon it; but desiring, as he did, to secure the glory of its completion, he accepted the terms, and pledged himself to conduct the undertaking perfectly to the end. The writing Filippo had given was copied into a book wherein the purveyor kept the accounts of the works in wood and marble, together with the obligation into which Filippo had entered as above said. An allowance was then made to him, conformably with what had at other times been given to other masters of the works.

"When the commission given to Filippo became known to the artists and citizens, some thought well of it, and others ill, as always is the case with a matter which calls forth the opinions of the populace, the thoughtless, and the envious. Whilst the preparation of materials for beginning to build was making, a party was formed among the artists and citizens; and these men proceeding to the syndics and wardens, declared that the matter had been concluded too hastily, and that such a work ought not to be executed according to the opinion of one man only; they added, that if the syndics and wardens had been destitute of distinguished men, instead of being furnished with such in abundance, they would have been excusable, but that what was now done was not likely to redound to the honor of the citizens, seeing, that if any accident should happen, they would incur blame, as persons who had conferred too great a charge on one man, without considering the losses and disgrace that might result to the public. All this considered, it would be well to give Filippo a colleague, who might restrain his impetuosity (furore).

"Lorenzo Ghiberti had at that time attained to high credit by the evidence of his genius, which he had given in the doors of San Giovanni; and that he was much beloved by certain persons who were very powerful in the government was now proved with sufficient clearness, since, perceiving the glory of Filippo to increase so greatly, they labored in such a manner with the syndics and wardens, under the pretext of care and anxiety for the building, that Ghiberti was united with Filippo in the work. The bitter vexation of Filippo, the despair into which he fell, when he heard what the wardens had done, may be understood by the fact that he was on the point of flying from Florence; and had it not been that Donato and Luca della Robbia comforted and encouraged him, he would have gone out of his senses. A truly wicked and cruel rage is that of those men, who, blinded by envy, endanger the honors and noble works of others in the base strife of ambition: it was not the fault of these men that Filippo did not break in pieces the models, set fire to the designs, and in one half hour destroy all the labors so long endured, and ruin the hopes of so many years. The wardens excused themselves at first to Filippo, encouraging him to proceed, reminding him that the inventor and author of so noble a fabric was still himself, and no other; but they, nevertheless, gave Lorenzo a stipend equal to that of Filippo. The work was then continued with but little pleasure on the part of Filippo, who knew that he must endure all the labors connected therewith, and would then have to divide the honor and fame equally with Lorenzo. Taking courage, nevertheless, from the thought that he should find a method of preventing the latter from remaining very long attached to that undertaking, he continued to proceed after the manner laid down in the writing given to the wardens. Meanwhile the thought occurred to the mind of Filippo of constructing a complete model, which, as yet, had never been done. This he commenced forthwith, causing the parts to be made by a certain Bartolomeo, a joiner, who dwelt near his studio. In this model (the measurements of which were in strict accordance with those of the building itself, the difference being of size only), all the difficult parts of the structure were shown as they were to be when completed; as, for example, staircases lighted and dark, with every other kind of light, with the buttresses and other inventions for giving strength to the building, the doors, and even a portion of the gallery. Lorenzo, having heard of this model, desired to see it, but Filippo refusing, he became angry, and made preparations for constructing a model of his own, that he might not appear to be receiving his salary for nothing, but that he also might seem to count for something in the matter. For these models Filippo received fifty lire and fifteen soldi, as we find by an order in the book of Migliore di Tommaso, under date of the 3d October, 1419, while Lorenzo was paid three hundred lire for the labor and cost of his model, a difference occasioned by the partiality and favor shown to him, rather than merited by any utility or benefit secured to the building by the model which he had constructed.

"This vexatious state of things continued beneath the eyes of Filippo until the year 1426,[3] the friends of Lorenzo calling him the inventor of the work, equally with Filippo, and this caused so violent a commotion in the mind of the latter, that he lived in the utmost disquietude. Various improvements and new inventions were, besides, presenting themselves to his thoughts, and he resolved to rid himself of his colleague at all hazards, knowing of how little use he was to the work. Filippo had already raised the walls of the cupola to the height of twelve braccia in both vaults, but the works, whether in wood or stone, that were to give strength to the fabric, had still to be executed, and as this was a matter of difficulty, he determined to speak with Lorenzo respecting it, that he might ascertain whether the latter had taken it into consideration. But Lorenzo was so far from having thought of this exigency, and so entirely unprepared for it, that he replied by declaring that he would refer that to Filippo as the inventor. The answer of Lorenzo pleased Filippo, who thought he here saw the means of removing his colleague from the works, and of making it manifest that he did not possess that degree of knowledge in the matter that was attributed to him by his friends, and implied in the favor which had placed him in the situation he held. All the builders were now engaged in the work, and waited only for directions, to commence the part above the twelve braccia, to raise the vaults, and render all secure. The closing in of the cupola towards the top having commenced, it was necessary to provide the scaffolding, that the masons and laborers might work without danger, seeing that the height was such as to make the most steady head turn giddy, and the firmest spirit shrink, merely to look down from it. The masons and other masters were therefore waiting in expectation of directions as to the manner in which the chains were to be applied, and the scaffoldings erected; but, finding there was nothing determined on either by Lorenzo or Filippo, there arose a murmur among the masons and other builders, at not seeing the work pursued with the solicitude previously shown; and as the workmen were poor persons who lived by the labor of their hands, and who now believed that neither one nor the other of the architects had courage enough to proceed further with the undertaking, they went about the building employing themselves as best they could in looking over and furbishing up all that had been already executed.