Full Idea
To be governed by appetite alone is slavery, while obedience to a law one prescribes to oneself is freedom.
Gist of Idea
Appetite alone is slavery, and self-prescribed laws are freedom
Source
Jean-Jacques Rousseau (The Social Contract (tr Cress) [1762], I.8)
Book Reference
Rousseau,Jean-Jacques: 'The Social Contract', ed/tr. Cranston,Maurice [Penguin 1972], p.65
A Reaction
An interesting formulation, sitting somewhere between Aristotle and Kant. The problem is to find a metaethic which will justify the prescription and nature of the self-imposed law.