We may fancy to ourselves, that in ages of progress, the human race, like scouts gone abroad on the discovery of fertile lands, having the world open before them, are presented at every step with the appearance of novelty. They enter on every new ground with expectation and joy: they engage in every enterprise with the ardour of men, who believe they are going to arrive at national felicity, and permanent glory; and forget past disappointments amidst the hopes of future success. From mere ignorance, rude minds are intoxicated with every passion; and, partial to their own condition, and to their own pursuits, they think that every scene is inferior to that in which they are placed. Roused alike by success and by misfortune, they are sanguine, ardent, and precipitant; and leave, to the more knowing ages which succeed them, monuments of imperfect skill, and of rude execution of every art; but they leave likewise the marks of a vigorous and ardent spirit, which their successors are not always qualified to sustain, or to imitate. This may be admitted, perhaps, as a fair description of prosperous societies, at least during certain periods of their progress. The spirit with which they advance may be unequal in different ages, and may have its paroxysms and intermissions, arising from the inconstancy of human passions, and from the casual appearance or removal of occasions that excite them. But does this spirit, which for a time continues to carry on the project of civil and commercial arts, find a natural pause in the termination of its own pursuits? May the business of civil society be accomplished, and may the occasion of farther exertion be removed? Do continued disappointments reduce sanguine hopes, and familiarity with objects blunt the edge of novelty? Does experience itself cool the ardour of the mind? May the society be again compared to the individual? And may it be suspected, although the vigour of a nation, like that of a natural body, does not waste by a physical decay, that yet it may sicken for want of exercise, and die in the close of its own exertions? May societies, in the completion of all their designs, like men in years, who disregard the amusements, and are insensible to the passions of youth, become cold and indifferent to objects that used to animate in a ruder age? And may a polished community be compared to a man who, having executed his plan, built his house, and made his settlement; who having, in short, exhausted the charms of every subject, and wasted all his ardour, sinks into languor and listless indifference? If so, we have found at least another simile to our purpose. But it is probable, that here too the resemblance is imperfect; and the inference that would follow, like that of most arguments drawn from analogy, tends rather to amuse the fancy, than to give any real information on the subject to which it refers.