“Though no one would want to be sold as a slave, it is perhaps even more galling to be a sort of utility slave whom no one will buy.”

“You're a slave, a bound helpless slave to one thing in this world, your imagination.”

“Let us in the name of the Holy Trinity go on sending all the slaves that can be sold.”

“We are slaves, all of us...Some are slaves to fear. Others are slaves to reason—or base desire. It is our lot to be slaves...and the question must be to what shall we owe our indenture? Will it be to truth or to falsehood, hope or despair, light or darkness? I choose to serve the light, even though that bondage often lies in darkness.”

“Men make their own happiness, and a man may be respected even though only a slave.”

“An economy built on slave labor is vulnerable in two ways. One, availability of forced labor discourages technical innovation. The very wealthy [Roman]empire experienced no industrial revolutions. Two -- even more crucial -- slaves do not reproduce their own numbers. As Rome's wars of conquest ended, the slave population began to shrink, leading to a shortage of agricultural laborers by 200 A.D.”