This is a most worthwhile book, and Macklem brings his distinctive insight and voice to the questions he takes up. Macklem is right that the question of the 'philosophical grounding of our most fundamental political freedoms' has been oddly neglected, even as analyses of these freedoms have multiplied. Macklem's perspective on many of these questions is genuinely novel, which is rare given how much ink is spilled on some of these topics. The book will warrant the sustained attention of legal philosophers and philosophically minded lawyers. That is true of very little that is written on these issues.