“This book will be a boon to educators who teach courses that go beyond a basic introduction to historical linguistics and who seek to link issues in linguistic change to questions in theoretical phonology or syntax … This book is firmly on my list of the few crucial texts for historical linguists … students should be encouraged to read this volume critically to broaden their horizons and deepen their thoughts.” Times Higher Education Supplement “The appearance of this book is one of the most exciting events in historical linguistics in many decades: the book is a stunning achievement. No historical linguist can afford to ignore Hale’s attempt to provide a solid theoretical foundation for the field’s methodological successes, and to link synchronic theoretical linguistics to the study of language change. Hale’s perspective is original and stimulating, as is his lively writing style; some of his claims are sure to be controversial, but those who disagree with him will have to work hard to counter his arguments.” Sarah Thomason, University of Michigan