This first volume dedicated to Aristotle’s natural philosophy in the series of Cambridge Critical Guides deals with the Physics and testifies to its richness: it offers food for thought not only for those who are primarily interested in a very different picture of physical reality, but also for those who like to rethink nature and natural science in the light of metaphysical issues. As Mariska Leunissen puts it in her “Introduction”, the Physics not only “lays out Aristotle’s conceptual apparatus and methodological framework for all of his natural philosophy” (1), but “forms the conceptual entry-way into much of the Aristotelian Corpus” (2), including metaphysics and, to a lesser degree, political science and ethics. The contributions to the volume set out to justify this claim; they are not meant to introduce us to the Physics and its textual history or to offer a general overview of recent scholarship. Instead, the editor’s introduction summarizes three tasks of the book as (I) “reassessing the key concepts of Aristotle’s natural philosophy”; (II) “reconstructing Aristotle’s methods for the study of nature”; and (III) “determining the boundaries of Aristotle’s natural philosophy” (2-4). These tasks do not organize the volume into distinct parts, but serve as the axes of research that all the contributors keep in mind, although naturally, given the range of topics discussed, with different accents.