This volume is devoted to the syntax and semantics of various languages, studied with models based on constraints. Both French and international linguists present their work in tribute to Dani le Godard, emeritus research director at the Centre national de la recherche scientifique in France, a member of the Laboratoire de Linguistique Formelle at Universit Paris Diderot, and a specialist in the syntax and semantics of French and Romance languages.