the assumption that the founding of a family is the personal adventure of a free man. Before slavery sank slowly out of sight under the new climate of Christianity, it may or may not be true that slaves were in some sense bred like cattle, valued as a promising stock for labour. If it was so it was so in a much looser and vaguer sense than the breeding of the Eugenists; and such modern philosophers read into the old paganism a fantastic pride and cruelty which are wholly modern. It may be, however,