Book excerpt: Major philosophers whose views are discussed in this book include Descartes, Malebranche, Spinoza, Locke, Berkeley, Hume, Leibniz, Wolff, and Kant. In addition, the contributors of minor Cartesians, especially Regis and Desgabets, are analyzed in a separate chapter. Although the views of early modern philosophers on individuation and identity have been discussed before, these discussions have usually been treated as asides in a larger context.