Non-aggression, Liberty, Justice, and Prudence

The non-aggression principle is very simple, but its effective implementation is very complex. Thus, while rejecting the non-aggression principle is sufficient to reveal oneself as an enemy of liberty, accepting it is hardly sufficient to establish one's credentials as a reliable friend of liberty. By their fruits you will know them: the soundness of one's commitment to justice is continually validated by the test of prudence.