Frederic Bastiat, The Law

What, then, is law? It is the collective organization of the individual right to lawful defense.

[. . . ]

If every person has the right to defend -- even by force -- his person, his liberty, and his property, then it follows that a group of men have the right to organize and support a common force to protect these rights constantly. Thus the principle of collective right -- its reason for existing, its lawfulness -- is based on individual right. And the common force that protects this collective right cannot logically have any other purpose or any other mission than that for which it acts as a substitute. Thus, since an individual cannot lawfully use force against the person, liberty, or property of another individual, then the common force -- for the same reason -- cannot lawfully be used to destroy the person, liberty, or property of individuals or groups.