“Ithasbeensaidthatthescienceofoneageisthecommonsenseofthenext。Itmightwithequaltruthbesaidthattheequityofoneagebecomesthelawofthenext。Ifpositivelawisthebasisoforder，idealrightistheactivefactorinprogress。“-H。S。Foxwell，IntroductiontoMenger’sRighttotheWholeProduceofLabor，p。XI。Cf。theentirepassage。
Seetheessay，ofCivilGovernment，ch。V。
Apartfromthefamiliarhistoricalmaterialsforthestudyofthegrowthofnationalrights，includingtherightofproperty，thereareanumberoflatewritingsthatmaybeconsulted；e。g。
Jellinek，DeclarationoftheRightsofManandoftheCitizen；
Ritchie，NaturalRights；Bonar，chaptersrelatingtothistopicinPhilosophyandPoliticalEconomy；Hoffding，HistoryofModernPhilosophy，vol。I；Albee，HistoryofEnglishUtilitarianism；