Natural Law. Lysander Spooner Part First. Chapter 1. The Science of Justice. Section I. The science of mine and thine — the science of justice — is the science of all human rights; of all a man's rights of person and property; of all his rights to life, liberty, and the pursuit of happiness. It is the science which alone can tell any man what he can, and cannot, do; what he can, and cannot, have; what he can, and cannot, say, without infringing the rights of any other person. It is the science of peace; and the only science of peace; since it is the science which alone can tell us on what conditions mankind can live in peace, or ought to live in peace, with each other. These conditions are simply these: viz., first, that each ma... (From : Anarchy Archives.)