[167] So the Frisii, when unable to pay the tribute imposed by the Roman empire, “primo boves ipsos, mox agros, postremo corpora conjugum et liberorum, servitio tradebant.” (Tacit. Annal. iv, 72.) About the selling of children by parents, to pay the taxes, in the later times of the Roman empire see Zosimus, ii, 38; Libanius, t. ii, p. 427, ed. Paris, 1627. The manifold and long-continued suffering of the poor under this system, plunged into a state of debasement not more tolerable than that of the Gallic plebs,—and the injustices of the rich, in whom all political power was then vested, are facts well attested by the poems of Solon himself, even in the short fragments preserved to us:[168] and it appears that immediately preceding the time of his archonship, the evils had ripened to such a point,—and the determination of the mass of sufferers, to extort for themselves some mode of relief, had become so pronounced,—that the existing laws could no longer be enforced. According to the profound remark of Aristotle,—that seditions are generated by great causes but out of small incidents,[169]—we may conceive that some recent events had occurred as immediate stimulants to the outbreak of the debtors,—like those which lend so striking an interest to the early Roman annals, as the inflaming sparks of violent popular movements for which the train had long before been laid. Condemnations by the archons, of insolvent debtors, may have been unusually numerous, or the maltreatment of some particular debtor, once a respected freeman, in his condition of slavery, may have been brought to act vividly upon the public sympathies,—like the case of the old plebeian centurion at Rome,[170]—first impoverished by the plunder of the enemy, then reduced to borrow, and lastly adjudged to his creditor as an insolvent,—who claimed the protection of the people in the forum, rousing their feelings to the highest pitch by the marks of the slave-whip visible on his person. Some such incidents had probably happened, though we have no historians to recount them; moreover, it is not unreasonable to imagine, that that public mental affliction which the purifier Epimenidês had been invoked to appease, as it sprung in part from pestilence, so it had its cause partly in years of sterility, which must of course have aggravated the distress of the small cultivators. However this may be, such was the condition of things in 594 B. C., through mutiny of the poor freemen and thêtes, and uneasiness of the middling citizens, that the governing oligarchy, unable either to enforce their private debts or to maintain their political power, were obliged to invoke the well-known wisdom and integrity of Solon. Though his vigorous protest—which doubtless rendered him acceptable to the mass of the people—against the iniquity of the existing system had already been proclaimed in his poems, they still hoped that he would serve as an auxiliary, to