Slaves lose everything in chains, even the desire of escaping from them. - Jean-Jacques Rousseau

To be driven by our appetites alone is slavery, while to obey a law that we have imposed on ourselves is freedom.

...in respect of riches, no citizen shall ever be wealthy enough to buy another, and none poor enough to be forced to sell himself.

Since these conveniences by becoming habitual had almost entirely ceased to be enjoyable, and at the same time degenerated into true needs, it became much more cruel to be deprived of them than to possess them was sweet, and men were unhappy to lose them without being happy to possess them.