Full Idea
It is impossible to enslave a man without having first put him in the position of being incapable of doing without another.
Gist of Idea
People must be made dependent before they can be enslaved
Source
Jean-Jacques Rousseau (Discourse on the Origin of Inequality [1754], Part I)
Book Reference
Rousseau,Jean-Jacques: 'The Basic Political Writings', ed/tr. Cress,Donald A. [Hackett 1987], p.59
A Reaction
Ah yes. The key to running a slave plantation is not the threat of violence, but control of the shelter and food supply.