The concept of property itself had come up out of the common law and carried with it the idea of a natural, or common-law rights of liberty to acquir… - John R. Commons

While mere process of thinking is the process of habits, ideals, definitions, investigations, classifications, valuations and behavior, due process of thinking, which is due process of law, is the process of correct habits, right ideals, true definitions, sincere investigation, reasonable classification, reasonable value, and justice; whereas its opposite, undue process, is perverse habit, wrong ideals, double meanings, partial investigation, class legislation, confiscation and injustice.

Legally, the term liberty means absence of duty, or rather the limit of duty.

Liberty is absence of restraint. Freedom is participation in government.