This page intentionally left blank BernardSchutz isDirectoroftheMaxPlanckInstituteforGravitationalPhysics,aProfes- soratCardiffUniversity,UK,andanHonoraryProfessorattheUniversityofPotsdamand theUniversityofHannover,Germany.HeisalsoaPrincipalInvestigatoroftheGEO600 detectorprojectandamemberoftheExecutiveCommitteeoftheLIGOScientificCollab- oration.ProfessorSchutzhasbeenawardedtheAmaldiGoldMedaloftheItalianSociety forGravitation.