Comparisons and Contrasts collects eleven of Richard Kaynes recent articles in theoretical syntax, with an emphasis on comparative syntax, which uses syntactic differences among languages to probe the properties of the human language faculty. Kayne attaches particular importance to uncovering the primitives of syntax/semantics, demonstrating the existence of silent elements that are syntactically and semantically active, and showing their distribution and limitations. He attempts to derive the very existence of the noun-verb distinction-and to account for the sharp differences between nouns and verbs and for the lack of parallelism between them-from the antisymmetric character of syntax. The common theme is an exploration of how wide a range of questions the field of syntax can reasonably attempt to ask and then answer. Comparisons and Contrasts will appeal to scholars and graduate students interested in syntax, semantics, and their effects on other areas of linguistics.