"This volume is the product of a Columbia School Linguistics Conference held at Rutgers University in October 1999, where the plenary speaker was Ronald W. Langacker, a founder of Cognitive Linguistics. The goal of the book is to promote two kinds of dialogue. First, dialogue between Cognitive Grammar and the particular sign-based approach to language known as the Columbia School." The second kind of dialogue is that among several sign-based approaches themselves and also between them and two competitors: grammaticalization theory and generic functionalism. Topics range from phonology to discourse. Analytical problems are taken from a wide range of languages including English, German, Guarani, Hebrew, Hualapai, Japanese, Korean, Macedonian, Mandarin, Polish, Russian, Serbian, Spanish, Urdu, and Yaqui.