And surely I must have been the most wretched of human creatures if my own servants were to be no longer my slaves, but my masters for the rest of my life, since they would be privy to that act of mine; so that, however great might be their offences against me, I should have been unable to get them punished. For I should have been fully aware that it was in their power at once to be avenged on me and to win their own freedom by informing against me.