'These matters may appear light to those with whom observances of this character are habits, not rules; but in this country they are of primary consideration, a man's importance with himself and with others depending on them.' In ancient customary societies the influence of manner, which is a primary influence, has been settled into rules, so that it may aid established usages and not thwart them--that it may, above all, augment the HABIT of going by custom, and not break and weaken it. Every aid, as we have seen, was wanted to impose the yoke of custom upon such societies; and impressing the power of manner to serve them was one of the greatest aids. And lastly, we now understand why order and civilisation are so unstable even in progressive communities. We see frequently in states what physiologists call 'Atavism'--the return, in part, to the unstable nature of their barbarous ancestors. Such scenes of cruelty and horror as happened in the great French Revolution, and as happen, more or less, in every great riot, have always been said to bring out a secret and suppressed side of human nature; and we now see that they were the outbreak of inherited passions long repressed by fixed custom, but starting into life as soon as that repression was catastrophically removed and when sudden choice was given. The irritability of mankind, too, is only part of their imperfect, transitory civilisation and of their original savage nature. They could not look steadily to a given end for an hour in their pre-historic state; and even now, when excited or when suddenly and wholly thrown out of their old grooves, they can scarcely do so. Even some very high races, as the French and the Irish, seem in troubled times hardly to be stable at all, but to be carried everywhere as the passions of the moment and the ideas generated at the hour may determine. But, thoroughly to deal with such phenomena as these, we must examine the mode in which national characters can be emancipated from the rule of custom, and can be prepared for the use of choice. NO. V. THE AGE OF DISCUSSION.