Among the strengths of this edition are reliable, accessible translations, useful editorial materials, and a straightforward presentation of the Objections and Replies, including the Objections from Caterus, Arnauld, and Hobbes, and Descartes' Replies, in their entirety. 'The Letter Serving as a Reply to Gassendi' -- in which several of Descartes' associates present Gassendi's best arguments and Descartes' replies -- conveys the highlights and important issues of their notoriously extended exchange. Roger Ariew's illuminating general Introduction discusses the Meditations and the intellectual environment surrounding its reception. Also included are a bibliography and chronology.