Full Idea
Rights are enforced in the name of justice, whereas power is enforced come what may.
Gist of Idea
A right is a power which is enforced in the name of justice
Source
Roger Scruton (Short History of Modern Philosophy [1981], Ch.14)
Book Reference
Scruton,Roger: 'A Short History of Modern Philosophy' [ARK 1985], p.199
A Reaction
Presumably rights can be claimed as well as enforced, and the notion of a natural right is at least a discussable concept, as in the 'right' of self-defence. Scruton offers us a very right-wing definition of rights.