>Popular government in the common interest Aristotle calls “polity”; he reserves the word “democracy” for anarchic mob rule. >Aristotle agrees, however, that in practice much slavery is unjust, and he speculates that, if nonliving machines could be made to carry out menial tasks, there would be no need for slaves as living tools. Nevertheless, some people are so inferior and brutish that it is better for them to be controlled by a master than to be left to their own devices. >Money too has a proper and an improper use; its proper use is to be exchanged for goods and services, not to be lent out at interest.