At the head of his veteran and superior armies, he oppressed the savage or degenerate nations, who were incapable of confederating for their common safety: nor did he ever encounter an equal antagonist in numbers, in discipline, or in arms The science of war has been lost and revived with the arts of peace; but his campaigns are not illustrated by any siege or battle of singular difficulty and success; and he might behold, with envy, the Saracen trophies of his grandfather. After the Spanish expedition, his rear-guard was defeated in the Pyrenaean mountains; and the soldiers, whose situation was irretrievable, and whose valor was useless, might accuse, with their last breath, the want of skill or caution of their general. 99 I touch with reverence the laws of Charlemagne, so highly applauded by a respectable judge. They compose not a system, but a series, of occasional and minute edicts, for the correction of abuses, the reformation of manners, the economy of his farms, the care of his poultry, and even the sale of his eggs. He wished to improve the laws and the character of the Franks; and his attempts, however feeble and imperfect, are deserving of praise: the inveterate evils of the times were suspended or mollified by his government; 100 but in his institutions I can seldom discover the general views and the immortal spirit of a legislator, who survives himself for the benefit of posterity. The union and stability of his empire depended on the life of a single man: he imitated the dangerous practice of dividing his kingdoms among his sons; and after his numerous diets, the whole constitution was left to fluctuate between the disorders of anarchy and despotism. His esteem for the piety and knowledge of the clergy tempted him to intrust that aspiring order with temporal dominion and civil jurisdiction; and his son Lewis, when he was stripped and degraded by the bishops, might accuse, in some measure, the imprudence of his father. His laws enforced the imposition of tithes, because the daemons had proclaimed in the air that the default of payment had been the cause of the last scarcity. 101 The literary merits of Charlemagne are attested by the foundation of schools, the introduction of arts, the works which were published in his name, and his familiar connection with the subjects and strangers whom he invited to his court to educate both the prince and people. His own studies were tardy, laborious, and imperfect; if he spoke Latin, and understood Greek, he derived the rudiments of knowledge from conversation, rather than from books; and, in his mature age, the emperor strove to acquire the practice of writing, which every peasant now learns in his infancy.