Philippe Van Parijs delivered a lecture at the Hertie School of Governance in Berlin on April 3:
"Social Justice in the European Union: Four Views" (video, 50 minutes)
Commentary by Claus Offe and discussion: Video (45 minutes)
Philippe Van Parijs is Professor at the Université catholique de Louvain (UCL), Belgium.
See Philippe Van Parijs's discussion with John Rawls on Rawls's "The Law of Peoples" here: "Three letters on The Law of Peoples and the European Union" [pdf].