The double life of pluralism in Europe /Leone Niglia --Monistic ideology versus pluralistic reality: towards a normative design for European private law /Hans-W Micklitz --The poverty of global constitutionalism /Massimo La Torre --Pluralism and private law in the Union /Norbert Reich --European contract law through and beyond pluralism: the case of an optional instrument /Benedicte Fauvarque-Cosson --Legal pluralism in Europe: national laws, European legislation, and non-legislative codifications /Nils Jansen --Why we have no theory of European private law pluralism /Ralf Michael --A radical view of legal pluralism /Jan Smits --A radical view of pluralism?: Comments on Jan Smits /Brigitta Lurger --The economics of harmonising private law through optional rules /Fernando Gomez and Juan Jose Ganuza --How many systems of private law are there in Europe? /Martijn W Hesselink --Pluralism in a new key: between plurality and normativity /Leone Niglia.