Nicholas Jolley is Emeritus Professor of the University of California, Irvine. His books include Leibniz and Locke: A Study of the New Essays on Human Understanding (OUP, 1984); The Light of the Soul: Theories of Ideas in Leibniz, Malebranche, and Descartes (OUP, 1990); and Locke: His Philosophical Thought (OUP, 1999).