This is the first of two volumes emanating from the Linguistic Symposium on Romance Languages held at the University of Texas at Austin in February 2005. It features the keynote address delivered by Denis Bouchard on exaptation and linguistic explanation, as well as seventeen contributions by emerging and internationally recognized scholars of Spanish, French, Italian, as well as Rumanian. While the emphasis bears on formal analyses, the coverage is remarkably broad, as topics range from morphology, syntax, semantics, pragmatics and language acquisition. Each article seeks to represent a new perspective on these topics and a variety of frameworks and concepts are exploited: distributive morphology, entailment theory, grammaticalization, information structure, left-periphery, polarity lattice, spatial individuation, thematic hierarchy, etc. This volume will challenge anyone interested in current issues in theoretical Romance Linguistics.