This volume collects original papers - from some of the most prominent linguists in the world - on the theory of meaning (semantics) and its relation to syntax. The debate on the syntax-semantics interface, one of the liveliest in the field, is sure to be invigorated by these contributions. The contributors discuss central aspects of how meaning and form are related, by looking at a range of topics where such relations play a particularly prominent role. The topics address reference and anaphora as well as tense and aspect. The specific issues discussed include: the nature of identity statements, the referential properties of indefinites and the debate on their scopal properties, the theory of reconstruction, the proper characterization of aspectual notions and actional classes, tense in embedded, and intensional contexts. These papers offer a valuable source of the latest hypotheses being developed on the subject of syntax/semantics interface.