self, marked by a ..tamp of humiliation, and predestine- to their state of abjection and debasement. Homes, Plato and Aristotle distinctly taught this doctrine. All readers of history are well aware' of the excessive rigor and cruelty with which slaves were treated in ancient times. Even the right of life and death, which was then placed in the master's hands, was often exercised.

The slavery of ancient times was not only