Aristotle,
Politics (Jowett) — Book I
(1920)
“ The master is only the master of the slave; he does not belong to him, whereas the slave is not only the slave of his master, but wholly belongs to him. Hence we see what is the nature and office of a slave; he who is by nature not his own but another’s and yet a man, is by nature a slave; and he may be said to belong to another who, being a human being, is also a possession. And a possession may be defined as an instrument of action, separable from the possessor. ”
