Tad M. Schmaltz is Professor of Philosophy and James B. and Grace J. Nelson Fellow at the University of Michigan, Ann Arbor. He specializes in early modern philosophy, and is the author of Malebranche's Theory of the Soul (OUP 1996), Radical Cartesianism (2002), Descartes on Causation (OUP 2008), and Early Modern Cartesianisms (OUP 2017). In addition, he has edited or co-edited Receptions of Descartes (2005), Integrating History and Philosophy of Science (2012), Efficient Causation: A History (OUP 2014), The Historical Dictionary of Descartes and Cartesian Philosophy (2015), The Problem of Universals in Early Modern Philosophy (OUP 2017), and The Oxford Handbook of Descartes and Cartesianism (OUP 2019).