He who is unable to live in society, or who has no need because he is sufficient for himself, must be either… — Aristotle

Those who cannot face danger like men are the slaves of any invader.

Subjects are also kept poor by payment of taxes.

It is also in the interests of a tyrant to make his subjects poor, so that he may be able to afford the cost of his bodyguard, while the people are so occupied with their daily tasks that they have no time for plotting.