The eighth book of Aristotle's "Physics" is the culmination of his theory of nature. He discusses not just physics, but the origins of the universe and the metaphysical foundations of cosmology and physical science. It includes his argument for the existence of a first "unmoved mover".

`Professor Graham has given us an excellent translation in modern English' The Review of Metaphysics `Over the ... decades, a good deal of important and highly influential philosophical scholarship on Aristotle in English has appeared in these commentaries ... The present volume meets the generally high standard set by its predecessors.' BMR. `The commentary ... is admirably clear and judicious ... a solid and useful piece of work.' BMR. `Graham's translation and commentary strive for the utmost clarity in the presentation of the argument and the alternative interpretations. In this he seems to me to have been largely successful. Especially valuable is an eight page outline of the argument supplied as an appendix.' BMR.