He who can be, and therefore is, another's, and he who participates in reason enough to apprehend, but not to have, is a slave by nature.
Works of Aristotle: Politica, by B. Jowett. Oeconomica, by E. S. Forster. Atheniensium respublica, by Sir F. G. Kenyon. 1921 (ed. 1921)