240. These, then, are principles applicable to all arts, without a single exception, and of particular importance in painting and architecture.[53] It will sometimes be found that one rule comes in the way of another; in which case, the most important is, of course, to be obeyed; but, in general, they will afford us an easy means of arriving at certain results, when, before, our conjectures must have been vague and unsatisfactory. [Footnote 53: [For further discussion of which, see _Elements of Drawing_, Letter III.]] We may now proceed to determine the most proper _form_ for the mountain villa of England. 241. We must first observe the prevailing lines of the near hills: if they are vertical, there will most assuredly be monotony, for the vertical lines of crag are never grouped, and accordingly, by our fourth rule, the prevailing lines of our edifice must be horizontal. On the Lake of Thun the tendency of the hills is vertical; this tendency is repeated by the buildings,[54] and the composition becomes thoroughly bad; but on the Lake of Como we have the same vertical tendency in the hills, while the grand lines of the buildings are horizontal, and the composition is good. But, if the prevailing lines of the near hills be curved (and they will be either curved or vertical), we must not interrupt their character, for the energy is then pervading, not individual; and, therefore, our edifice must be rectangular. [Footnote 54: [In their turrets and pinnacles, as shown by a poor wood-cut in the magazine, not worth reproduction.]] In both cases, therefore, the grand outline of the villa is the same; but in one we have it set off by contrast, in the other by assimilation; and we must work out in the architecture of each edifice the principle on which we have begun. Commencing with that in which we are to work by contrast: the vertical crags must be the result of violence, and the influence of destruction, of distortion, of torture, to speak strongly, must be evident in their every line. We free the building from this influence, and give it repose, gracefulness, and ease; and we have a contrast of feeling as well as of line, by which the desirable attributes are rendered evident in both objects, while the _duration_ of neither energy being allowed, there can be no disagreeable effect upon the spectator, who will not shrink from the terror of the crags, nor feel a want of excitement in the gentleness of the building. 242. Secondly, Solitude is powerful and evident in its effect on the distant hills; therefore the effect of the villa should be joyous and life-like (not flippant, however, but serene); and, by rendering it so, we shall enhance the sublimity of the distance, as we showed in speaking of the Westmoreland cottage; and, therefore, we may introduce a number of windows with good effect, provided that they are kept in horizontal lines, and do not disturb the repose which we have shown to be necessary.