"If you are looking for a book doing something genuinely innovative, doing it with rigor, clarity, and a deep sensitivity to the breadth of philosophical tradition, then One is one for you." -- Notre Dame Philosophical Reviews Online "A bracingly original treatise. The breadth and boldness of this work, as well as its technical rigor and historical sensitivity are very much to be admired." -- Mind "In just 230 pages, One is a dense, remarkably clear, and unique treatment of a wide-range of topics in philosophy. What unifies the book is the topic of what unifies objects generally-what Priest calls 'gluon theory'-and allied themes in Buddhist thought. Gluon theory answers the question, What makes something one? What is it that 'glues' an object together into a unity? The impressive number of topics brought together by Priest's answer, which prominently services the fringe views for which he is well-known, speaks to its power and elegance. For this reason, One could also serve as a panoramic introduction to Priest's work generally." -- Philosophy in Review.