A single glance shows what trouble the architect had with the old facade and towers, and what temptation to pull them all down. One cannot quite say that he has spoiled his own church in trying to save what he could of the old, but if he did not quite spoil it, he saved it only by the exercise of an amount of intelligence that we shall never learn enough to feel our incapacity to understand. True ignorance approaches the infinite more nearly than any amount of knowledge can do, and, in our case, ignorance is fortified by a certain element of nineteenth-century indifference which refuses to be interested in what it cannot understand; a violent reaction from the thirteenth century which cared little to comprehend anything except the incomprehensible. The architect at Chartres was required by the Virgin to provide more space for her worshippers within the church, without destroying the old portal and fleche which she loved. That this order came directly from the Virgin, may be taken for granted. At Chartres, one sees everywhere the Virgin, and nowhere any rival authority; one sees her give orders, and architects obey them; but very rarely a hesitation as though the architect were deciding for himself. In his western front, the architect has obeyed orders so literally that he has not even taken the trouble to apologize for leaving unfinished the details which, if he had been responsible for them, would have been his anxious care. He has gone to the trouble of moving the heavy doorways forward, so that the chapels in the towers, which were meant to open on a porch, now open into the nave, and the nave itself has, in appearance, two more spans than in the old church; but the work shows blind obedience, as though he were doing his best to please the Virgin without trying to please himself. Probably he could in no case have done much to help the side aisles in their abrupt collision with the solid walls of the two towers, but he might at least have brought the vaulting of his two new bays, in the nave, down to the ground, and finished it. The vaulting is awkward in these two bays, and yet he has taken great trouble to effect what seems at first a small matter. Whether the great rose window was an afterthought or not can never be known, but any one can see with a glass, and better on the architectural plan, that the vaulting of the main church was not high enough to admit the great rose, and that the architect has had to slope his two tower-spans upward. So great is the height that you cannot see this difference of level very plainly even with a glass, but on the plans it seems to amount to several feet; perhaps a metre. The architect has managed to deceive our eyes, in order to enlarge the rose; but you can see as plainly as though he were here to tell you, that, like a great general, he has concentrated his whole energy on the rose, because the Virgin has told him that the rose symbolized herself, and that the light and splendour of her appearance in the west were to redeem all his awkwardnesses.

Of course this idea of the Virgin's interference sounds to you a mere bit of fancy, and that is an account which may be settled between the Virgin and you; but even twentieth-century eyes can see that the rose redeems everything, dominates everything, and gives character to the whole church.

In view of the difficulties which faced the artist, the rose is inspired genius,—the kind of genius which Shakespeare showed when he took some other man's play, and adapted it. Thus far, it shows its power chiefly by the way it comes forward and takes possession of the west front, but if you want a foot-rule to measure by, you may mark that the old, twelfth-century lancet-windows below it are not exactly in its axis. At the outset, in the original plan of 1090, or thereabouts, the old tower—the southern tower—was given greater width than the northern. Such inequalities were common in the early churches, and so is a great deal of dispute in modern books whether they were accidental or intentional, while no one denies that they are amusing. In these towers the difference is not great,—perhaps fourteen or fifteen inches,—but it caused the architect to correct it, in order to fit his front to the axis of the church, by throwing his entrance six or seven inches to the south, and narrowing to that extent the south door and south lancet. The effect was bad, even then, and went far to ruin the south window; but when, after the fire of 1194, the architect inserted his great rose, filling every inch of possible space between the lancet and the arch of the vault, he made another correction which threw his rose six or seven inches out of axis with the lancets. Not one person in a hundred thousand would notice it, here in the interior, so completely are we under the control of the artist and the Virgin; but it is a measure of the power of the rose.

Looking farther, one sees that the rose-motive, which so dominates the west front, is carried round the church, and comes to another outburst of splendour in the transepts. This leads back to fenestration on a great scale, which is a terribly ambitious flight for tourists; all the more, because here the tourist gets little help from the architect, who, in modern times, has seldom the opportunity to study the subject at all, and accepts as solved the problems of early Gothic fenestration. One becomes pedantic and pretentious at the very sound of the word, which is an intolerable piece of pedantry in itself; but Chartres is all windows, and its windows were as triumphant as its Virgin, and were one of her miracles. One can no more overlook the windows of Chartres than the glass which is in them. We have already looked at the windows of Mantes; we have seen what happened to the windows at Paris. Paris had at one leap risen twenty-five feet higher than Noyon, and even at Noyon, the architect, about 1150, had been obliged to invent new fenestration. Paris and Mantes, twenty years later, made another effort, which proved a failure. Then the architect of Chartres, in 1195, added ten feet more to his vault, and undertook, once for all, to show how a great cathedral should be lighted. As an architectural problem, it passes far beyond our powers of understanding, even when solved; but we can always turn to see what the inevitable Viollet- le-Duc says about its solution at Chartres:—

Toward the beginning of the thirteenth century, the architect of the Cathedral of Chartres sought out entirely new window combinations to light the nave from above. Below, in the side aisles he kept to the customs of the times; that is, he opened pointed windows which did not wholly fill the spaces between the piers; he wanted, or was willing to leave here below, the effect of a wall. But in the upper part of his building we see that he changed the system; he throws a round arch directly across from one pier to the next; then, in the enormous space which remains within each span, he inserts two large pointed windows surmounted by a great rose … We recognize in this construction of Notre Dame de Chartres a boldness, a force, which contrast with the fumbling of the architects in the Ile de France and Champagne. For the first time one sees at Chartres the builder deal frankly with the clerestory, or upper fenestration, occupying the whole width of the arches, and taking the arch of the vault as the arch of the window. Simplicity of construction, beauty in form, strong workmanship, structure true and solid, judicious choice of material, all the characteristics of good work, unite in this magnificent specimen of architecture at the beginning of the thirteenth century.

Viollet-le-Duc does not call attention to a score of other matters which the architect must have had in his mind, such as the distribution of light, and the relations of one arrangement with another: the nave with the aisles, and both with the transepts, and all with the choir. Following him, we must take the choir separately, and the aisles and chapels of the apse also. One cannot hope to understand all the experiments and refinements of the artist, either in their successes or their failures, but, with diffidence, one may ask one's self whether the beauty of the arrangement, as compared with the original arrangement in Paris, did not consist in retaining the rose-motive throughout, while throwing the whole upper wall into window. Triumphant as the clerestory windows are, they owe their charm largely to their roses, as you see by looking at the same scheme applied on a larger scale on the transept fronts; and then, by taking stand under the croisee, and looking at all in succession as a whole.

The rose window was not Gothic but Romanesque, and needed a great deal of coaxing to feel at home within the pointed arch. At first, the architects felt the awkwardness so strongly that they avoided it wherever they could. In the beautiful facade of Laon, one of the chief beauties is the setting of the rose under a deep round arch. The western roses of Mantes and Paris are treated in the same way, although a captious critic might complain that their treatment is not so effective or so logical. Rheims boldly imprisoned the roses within the pointed arch; but Amiens, toward 1240, took refuge in the same square exterior setting that was preferred, in 1200, here at Chartres; and in the interior of Amiens the round arch of the rose is the last vault of the nave, seen through a vista of pointed vaults, as it is here. All these are supposed to be among the chief beauties of the Gothic facade, although the Gothic architect, if he had been a man of logic, would have clung to his lines, and put a pointed window in his front, as in fact he did at Coutances. He felt the value of the rose in art, and perhaps still more in religion, for the rose was Mary's emblem. One is fairly sure that the great Chartres rose of the west front was put there to please her, since it was to be always before her eyes, the most conspicuous object she would see from the high altar, and therefore the most carefully considered ornament in the whole church, outside the choir. The mere size proves the importance she gave it. The exterior diameter is nearly forty-four feet (13.36 metres). The nave of Chartres is, next perhaps to the nave of Angers, the widest of all Gothic naves; about fifty-three feet (16.31 metres); and the rose takes every inch it can get of this enormous span. The value of the rose, among architects of the time, was great, since it was the only part of the church that Villard de Honnecourt sketched; and since his time, it has been drawn and redrawn, described and commented by generations of architects till it has become as classic as the Parthenon.

Yet this Chartres rose is solid, serious, sedate, to a degree unusual in its own age; it is even more Romanesque than the pure Romanesque roses. At Beauvais you must stop a moment to look at a Romanesque rose on the transept of the Church of Saint-Etienne; Viollet-le-Duc mentions it, with a drawing (article, "Pignon"), as not earlier than the year 1100, therefore about a century earlier than the rose of Chartres; it is not properly a rose, but a wheel of fortune, with figures climbing up and falling over. Another supposed twelfth-century rose is at Etampes, which goes with that of Laon and Saint-Leu-d'Esserent and Mantes. The rose of Chartres is so much the most serious of them all that Viollet-le-Duc has explained it by its material,—the heavy stone of Bercheres;—but the material was not allowed to affect the great transept roses, and the architect made his material yield to his object wherever he thought it worth while. Standing under the central croisee, you can see all three roses by simply turning your head. That on the north, the Rose de France, was built, or planned, between 1200 and 1210, in the reign of Philip Augustus, since the porch outside, which would be a later construction, was begun by 1212. The Rose de France is the same in diameter as the western rose, but lighter, and built of lighter stone. Opposite the Rose de France stands, on the south front, Pierre Mauclerc's Rose de Dreux, of the same date, with the same motive, but even lighter; more like a rose and less like a wheel. All three roses must have been planned at about the same time, perhaps by the same architect, within the same workshop; yet the western rose stands quite apart, as though it had been especially designed to suit the twelfth-century facade and portal which it rules. Whether this was really the artist's idea is a question that needs the artist to answer; but that this is the effect, needs no expert to prove; it stares one in the face. Within and without, one feels that the twelfth-century spirit is respected and preserved with the same religious feeling which obliged the architect to injure his own work by sparing that of his grandfathers.

Conspicuous, then, in the west front are two feelings:—respect for the twelfth-century work, and passion for the rose fenestration; both subordinated to the demand for light. If it worries you to have to believe that these three things are in fact one; that the architect is listening, like the stone Abraham, for orders from the Virgin, while he caresses and sacrifices his child; that Mary and not her architects built this facade; if the divine intention seems to you a needless impertinence, you can soon get free from it by going to any of the later churches, where you will not be forced to see any work but that of the architect's compasses. According to Viollet-le-Duc, the inspiration ceased about 1250, or, as the Virgin would have dated it, on the death of Blanche of Castile in 1252. The work of Chartres, where her own hand is plainly shown, belongs in feeling, if not in execution, to the last years of the twelfth century (1195-1200). The great western rose which gives the motive for the whole decoration and is repeated in the great roses of the transepts, marks the Virgin's will,—the taste and knowledge of "cele qui la rose est des roses," or, if you prefer the Latin of Adam de Saint-Victor, the hand of her who is "Super rosam rosida."

All this is easy; but if you really cannot see the hand of Mary herself in these broad and public courts, which were intended, not for her personal presence, but for the use of her common people, you had better stop here, and not venture into the choir. Great halls seem to have been easy architecture. Naves and transepts were not often failures; facades and even towers and fleches are invariably more or less successful because they are more or less balanced, mathematical, calculable products of reason and thought. The most serious difficulties began only with the choir, and even then did not become desperate until the architect reached the curve of the apse, with its impossible vaultings, its complicated lines, its cross-thrusts, its double problems, internal and external, its defective roofing and unequal lighting. A perfect Gothic apse was impossible; an apse that satisfied perfectly its principal objects was rare; the simplest and cheapest solution was to have no apse at all, and that was the English scheme, which was tried also at Laon; a square, flat wall and window. If the hunt for Norman towers offered a summer's amusement, a hunt for apses would offer an education, but it would lead far out of France. Indeed, it would be simpler to begin at once with Sancta Sophia at Constantinople, San Vitale at Ravenna and Monreale at Palermo, and the churches at Torcello and Murano, and San Marco at Venice; and admit that no device has ever equalled the startling and mystical majesty of the Byzantine half-dome, with its marvellous mosaic Madonna dominating the church, from the entrance, with her imperial and divine presence. Unfortunately, the northern churches needed light, and the northern architects turned their minds to a desperate effort for a new apse.