Inasmuch as, moreover, Christian worship is an exaltation of the soul above the limitations of natural existence and a reconciliation of the individual with God, we find in this fact a mediation of points of view which are separably distinct in one and the same essentially concrete unity. At the same time romantic architecture receives the function in the form and co-ordination of its building to make the above content of spiritual life, to enclose which is the prime object of its construction, so far as this is architecturally feasible, shine through and determine the actual shape both of the exterior and the interior. The following points will assist our understanding of the nature of this problem.
(αα) The space of the interior will have to be no abstractly undifferentiated and empty one, which possesses no essentially defined features or links that relate them respectively. It must have a concrete form, one, that is, which presents differences in respect to all the mutual relations of length, breadth, height, and the mode of such dimensions. The form of the circle, the square, the oblong, with the equality of enclosing walls and roofing which is necessary to these figures, will not be suitable here. The movement, severation, and mediation of soul-life in its exaltation from that which is of earth to that which is eternal, to the far-off and the more lofty, would fail to find apt expression in this bare equality of a square figure.
(ββ) It is only a corollary to this that in the Gothic style the substantial purport of the house, both in respect of its enclosing form of sidewalls and roof, and in that of its columns and beams relatively to the configuration of the whole and its parts, becomes a matter of subordinate importance. And with this disappears, on the one hand, as we have already noticed, the strict distinction between burden and support, as on the other we find no longer rectangularity is emphasized as essential to the building's purpose. Recourse is made once more to an analogous form of Nature, namely, one that prefigures a solemn place of assemblage and enclosure which freely soars upwards. If we step into the interior of a cathedral of the Middle Ages we have brought before us not so much the stability and mechanical purpose of supporting piers and a vault that rests upon it. We are rather reminded of the arches of a forest, whose rows of trees incline with their branches to one another and form an enclosure by this means. A cross-beam requires a secure centre of gravity and the horizontal position. In Gothic architecture, however, the walls mount up freely and independently, and in the same way the piers, which then expand above in several directions apart from one another, and coalesce as though by accident. In other words their function, to support the vaulting, is, although the same in truth reposes on the piers, not expressly emphasized and independently set forth[105]. The effect is as though they did not carry such, just as in the tree the branches do not appear as though supported by the stem, but rather in their airy incurvation as a continuation of the stem, and with the branches of other trees, form a roof of leaves. A roofing of this kind, which is thus fixed upon as the cover of the life of Spirit, this awful environment, which invites us to contemplation, it is which the cathedral presents us, in so far as the walls and among them the forest of piers freely coalesce in their summits. But for all that we do not actually assert that Gothic architecture has accepted trees and woods for the actual exemplar of its forms.
While the sharpening to a point offers us generally the basic type in Gothic we find in the interior of churches this tendency take the more specialized shape of the pointed arch. By this means the columns in particular receive an entirely fresh significance and appearance.
The broad Gothic churches require a roofing to close them in, a roofing which on account of the breadth is a severe burden and renders support unavoidable. Here, therefore, the columns appear to be in their right place. For the reason, however, that the straining upwards is precisely that which converts support into the appearance of free soaring-up columns are unable to be employed here with the significance they possess in classical architecture. They become, on the contrary, piers which, in lieu of the cross-beam, carry arches in a manner whereby they appear as simply a continuation of the pier and coalesce together without definite object in a point. We may, no doubt, conceive the unavoidable termination of two piers that stand apart from one another as analogous to a gut-roof that rests on corner posts; but taking into consideration the surfaces at the sides, although they, too, are planted on piers in entirely obtuse angles, and incline to one another in an acute angle, we find in the latter case none the less the conception on the one hand of burden, and on the other of support. The pointed arch, on the contrary, which apparently in the first instance mounts up in a straight line, and only by imperceptible and slower degrees leans forward in order to incline to the opposite side, presents for the first time the complete idea as though it was just nothing but the continuation of the pier itself, which forms an arch with another. Piers and vaulting appear, in their contrast to columns and the beam, as one and the same image, although the arches rest upon the capitals from which they spring. The capitals, too, in specific cases, such as occur in Netherland churches, keep away altogether, and by this means the inseparable unity above-mentioned is made expressly visible to the eye.
Moreover, on account of the fact that this striving upwards is declared as the fundamental character, the height of the piers exceeds that of the breadth of their base in a proportion that we cannot calculate at sight. The piers are thin, slender, and soar up so high the sight is unable to take in the entire form at a glance, and is compelled to rove about in its upward flight until it attains repose at last in the gently inclined vaulting of the uniting arch, much as the soul moving with restlessness in its devotion from the ground of finitude uplifts itself and finds rest in God alone.
The final point of distinction between piers and columns consists in this, that the piers which are distinctively Gothic, and, where they are elaborated in their specific character, do not, as columns do, remain in the circular form, essentially secure in that, and one and the same cylinder, but to begin with at their base in a reed-like way constitute a convolute, a bundle of fibres, which break into varied distinction as the pier mounts and radiate forth on all sides under various modes of continuation. And, while we find already in classical architecture that the column represents an advance from that which is merely subject to laws of gravity, from the solid and simple to that which is more slender and more adorned, so, too, we find much the same change visible in the pier, which, in this more slender upgrowth, ever withdraws itself more from the mere service of support, and freely soars upward albeit shut in at its summit.
The same form of piers and pointed arches is repeated in windows and doors. More particularly the windows, not merely the lower ones of the side aisles, but also in a still higher degree, the upper ones of the transepts and choir, are of colossal size in order that the glance, which rests upon their lower portion, may not at once take in the upper part as well and may be uplifted as in the case of the vaultings. This adds to the restless motion of the upward flight which it is intended to communicate to the spectator. Add to this the window panes, as we have already remarked, are with their coloured glass only partially transparent. Sometimes they present sacred histories and sometimes they are merely panes of varied colour with the object of increasing the twilight effect and permitting the light of the wax candles to shine forth. For in these buildings it is another daylight than that of Nature which illumines.
(γγ) Finally, as regards the entire articulation of the interior of Gothic churches we have already seen that it is imperative that the particular parts of such should be differentiated in their breadth, height, and length. The primary distinction to consider in this respect is that of choir, transept, and nave from the encircling aisles. These latter are constructed on the sides external to the fabric by means of walls which enclose it, and from which piers and arches are carried, and in their separation from the interior by means of piers and pointed arches, which present openings toward the nave, having no partition walls between. They receive therefore the converse aspect to that of the colonnades in Greek temples, which are open on the outside and are enclosed towards the interior, whereas the aisles in Gothic churches permit free passage between the piers to the nave. In certain examples we find two such aisles in juxtaposition; in fact, Antwerp cathedral is an example which possesses three of them at either side of the nave.
The nave itself soars up by means of enclosing walls on either side, at different degrees of elevation, according to various modes of disposition, above the aisles, broken by colossal windows in such a way that the walls themselves at the same time have the appearance of being slender piers, which everywhere separate in pointed arches and build up vaultings. There are, however, churches in which the side aisles have the same height as the nave, as, for example, in the later choirs of the Sebaldus Church in Nuremberg, which offers the impression of an imposing, free, and capacious type of slenderness and delicacy. In this way the whole is divided by means of rows of piers, which are brought together at their summits like a forest in flights of branching arches. Attempts have been made to discover in the number of these piers, and generally in the relations of number much mystical significance. There can be no question but that at the period of the finest efflorescence of Gothic architecture, that, for example, of Cologne Cathedral, a great significance was attached to the symbols of number, the as yet more gloomy presentiment of what is rational falling in readily with an insistence on external traits of this kind. But despite this fact the artistic productions of architecture, which are carried through by means of that which is always to a greater or less degree merely the capricious play of a symbolism of subordinate rank, is neither of the profoundest significance, nor of the most exalted form of beauty, for the reason that the genuine spirit of these is expressed in entirely different forms and modes than those applicable to the significance of numeral distinctions. We must therefore be especially cautious not to carry such investigations too far. To attempt to go to the root of everything and in every direction to desire to discover a deeper meaning will tend quite as much to contract our horizon and destroy our thoroughness of search as is common with all short-sighted learning which passes over the depth which is clearly expressed and presented without grasping it. In respect to the more detailed distinction between choir and nave, I will in conclusion emphasize the following points. The high-altar, this real centre of the ritual, is placed in the choir, which is thus dedicated as the place for the priesthood as distinct from the community, whose proper place is that of the nave, where we find the pulpit for the preacher. A flight of steps, which varies in its height, conducts us to the choir, so that this latter section and all that takes place in it is visible everywhere. In the same way this choir section is relatively to decoration more ornate, and, moreover, in its distinction from the more prolonged nave, even where the vaultings in both cases are of equal height, is more serious, solemn, and sublime. Above all we find here that the entire building is finally enclosed with piers of greater thickness and more closely, by means of which the breadth tends to disappear, and the entire effect is one of greater stillness and height, whereas the transepts and the nave through their towers still provide with their means of entrance and exit a connection with the outside world. According to the points of the compass the choir is placed to the east, the nave lies in a westerly direction, and the transepts stand towards the north and south. We find, however, churches with a double choir, in which the two choirs lie respectively in the direction of morning and evening and the main entrances are placed in the transepts. The stone font for baptism, that is, for the sanctification of human entry into the Christian community, is placed in a porch by the main entrance into the church. And, finally, we may note that, while the more express worship is provided for by the entire building, and notably the choir and nave, there are also small chapels which form in each case a fresh and independent church.