This volume celebrates the work of the American linguist Mark R. Hale with contributions from general and historical linguistics, especially comparative Indo-European linguistics, phonological and syntactic theory, and language change. This volume is dedicated to Mark R. Hale, Professor of Linguistics at Concordia University, Montreal, in celebration of his achievements and his impact on the field of linguistics. Mark Hales scholarship is among the most original, thought-provoking and provocative in the fieldor fields, rather, since his interests range from comparative Indo-European linguistics and reconstruction to phonological theory, syntactic change, Polynesian comparative reconstruction, Middle Iranian philology, and subgrouping methodology all the way to sociolinguistics. The contributions collected in this volume pay homage to Marks work as a scholar and a teacher and represent a considerable subset of his research interests, including comparative reconstruction, phonological and syntactic theory, theoretical approaches to sound change, historical morphology and morphosyntax, the syntax and semantics of clitics across different languages families, and the study of the synchronic grammar of ancient languages.