It was in the Roman State that military action—in Greece often purposeless and, except in the resistance to Persia, on the whole fruitless—worked out the social mission which formed its true justification. Hence at Rome slavery also most properly found its place, so long as that mission was in progress of accomplish ment. As soon as the march of conquest had reached its natural limit, slavery began to be modified; and when the empire was divided into the several States which had grown up under it, and the system of defence characteristic of the middle ages was substituted for the aggressive system of antiquity, slavery gradu ally disappeared, and was replaced by serfdom.
We have so far dealt with the political results of ancient slavery, and have found it to have been in certain respects not only useful but indispensable. When we consider its moral effects, whilst endeavouring to avoid exaggeration, we must yet pro nounce its influence to have been profoundly detrimental. In its action on the slave it marred in a great measure the happy effects of habitual industry by preventing the development of the sense of human dignity which lies at the foundation of morals. On the morality of the masters—whether personal, domestic or social—the effects of the institution were disastrous.
We find slavery fully established in the Homeric period. The prisoners taken in war are retained as slaves, or sold (11. 752) or held at ransom (II. vi. 427) by the captor. Sometimes the men of a conquered town or district are slain and the women carried off (Od. ix. 4o). Not unfrequently free persons were kid napped by pirates and sold in other regions, like Eumaeus in the Odyssey. The slave might thus be by birth of equal rank with his master, who knew that the same fate might befall him self or some of the members of his family. The institution does not present itself in a very harsh form in Homer, especially if we consider (as Grote suggests) that "all classes were much on a level in taste, sentiment and instruction." The male slaves were employed in the tillage of the land and the tending of cattle, and the females in domestic work and household manufactures. The principal slaves often enjoyed the confidence of their masters and had important duties entrusted to them ; and, after lengthened and meritorious service, were put in possession of a house and property of their own (Od. xiv. 64). Grote's idea that the women slaves were in a more pitiable condition than the males does not seem justified, except perhaps in the case of the aletrides, who turned the household mills which ground the flour consumed in the family, and who were sometimes overworked by unfeeling masters (Od. xx. IIo-119). Homer marks in a celebrated couplet his sense of the moral deterioration commonly wrought by the condition of slavery (Od. xvii. 322).