Foreword -- Introduction: A framework of phases for linguistic theory -- Phases beyond explanatory adequacy -- Phase periodicity -- Exploring phase based implications regarding clausal architecture. A case study: Why structural Case cannot precede theta -- Phase cycles in service of projection-free syntax -- Feature-splitting Internal Merge and its implications for the elimination of A/A'-position types -- On feature inheritance, defective phases, and the movement-morphology connection -- The size of phases -- Consequences of phases for morpho-phonology -- Phonological interpretation by phase: Sentential stress, domain encapsulation and edge sensitivity -- Phases and semantics -- Phases in NPs and DPs -- Phases, head movement and second-position effects -- Index of subjects.