Slave (n.) for Aristotle is the human being whose work is the use of the body.
Slave (n.) to a Greek played the part of machinery rather than worker — a peculiar machine aimed not at producing anything but only at use.
Slave (n.) whose only work is the use of the body belongs with seeing, contemplating and living: activities that produce nothing outside themselves.
Slave (n.) is a not-quite-human life that makes a truly human, political life possible for others — and so, like bare life, stands on the threshold between nature and law.
Slave (n.) is the repressed of Western culture; his reappearance in the modern worker is a return of the repressed in pathological form.
Slave (n.) is the first appearance of pure instrumentality: a being that, by living for its own end, is for that very reason used for someone else's.
Slave (n.) stands at a double threshold of becoming human: animal life crossing into the human, and the human crossing into the tool.