Every active lawyer nowadays must be a constitutionalist, that is, an expert in constitutional law. This thought also applies to civil law specialists. The constitutionalization of private law and the Europeanization of private law are among the most fascinating phenomena of contemporary civil law science. A comprehensive comparison of the two phenomena has not yet been made. Even more so, it was not done from the perspective of the new EU member states. This gap is filled by this edited volume.