(_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 crossbeam 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.