Next to size the most important element is stability. By this is meant, not merely the strength required to support the roof or to resist the various thrusts and pressures, but that excess of strength over mere mechanical requirement which is necessary thoroughly to satisfy the mind, and to give to the building a monumental character, with an appearance that it could resist the shocks of time or the violence of man for ages yet to come. No people understood the value of this so well as the Egyptians. The form of the Pyramids is designed wholly with reference to stability, and even the Hypostyle Hall at Karnac excites admiration far more by its massiveness and strength, and its apparent eternity of duration, than by any other element of design. In the Hall all utilitarian exigencies and many other obvious means of effect are sacrificed to these, and with such success that after more than 3000 years’ duration still enough remains to excite the admiration which even the most unpoetical spectators cannot withhold from its beauties. In a more refined style much of the beauty of the Parthenon arises from this cause. The area of each of the pillars in the portico of the Pantheon at Rome is under 20 feet, that of those of the Parthenon is over 33 feet, and, considering how much taller the former are than the latter, it may be said that the pillars at Athens are twice as massive as those of the Roman temple, yet the latter have sufficed not only for the mechanical, but for many points of artistic stability; but the strength and solidity of the porticos of the Parthenon, without taking into consideration its other points of superiority, must always render it more beautiful than the other. The massiveness which the Normans and other early Gothic builders imparted to their edifices arose more from clumsiness and want of constructive skill than from design; but, though arising from so ignoble a cause, its effect is always grand, and the rude Norman nave often surpasses in grandeur the airy and elegant choir which was afterwards added to it. In our own country no building is more entirely satisfactory than the nave at Winchester, where the width of the pillars exceeds that of the aisles, and the whole is Norman in outline, though Gothic in detail. On the other hand no building of its dimensions and beauty of detail can well be so unsatisfactory as the choir at Beauvais. Though it has stood the test of centuries, it looks so frail, requires so many props to keep it up, and is so evidently an overstrained exercise of mechanical cleverness, that though it may excite wonder as an architectural _tour de force_, it never can satisfy the mind of the true artist, or please to the same extent as less ambitious examples.