sentences:  Restrictions on trade, or on production for purposes of trade, are indeed restraints; and all restraint, qua restraint, is an evil..."
  
  The use of the word "society" to mean the state, and the false claim that because a "social act" effects the "interest" of other persons it comes under the "jurisdiction" of the state, even if the act is entirely voluntary (i.e.an act of Free Will, agency, for both parties in the exchange).Liberty in commercial matters (in the voluntary buying and selling of goods and services) is not some different "principle" to liberty generally - it is clearly the same principle.