Stephen Gaukroger was educated at the Universities of London and Cambridge. He is Professor Emeritus of History of Philosophy and History of Science at the University of Sydney. His publications include Explanatory Structures (1978), Cartesian Logic (1989), Descartes, An Intellectual Biography (1995), Francis Bacon and the Transformation of Early-Modern Philosophy (2001), Descartes' System of Natural Philosophy (2002), The Emergence of a Scientific Culture (2006), The Collapse of Mechanism and the Rise of Sensibility (2010), Objectivity (2012), Le Monde en images (2015), and The Natural and the Human (2016). Catherine Wilson is Anniversary Professor of Philosophy at the University of York. She has written extensively on visual experience in scientific and aesthetic contexts and on Descartes, Leibniz, and Locke. She is the author of The Invisible World: Philosophers and the Microscope 1650-1720, recently reprinted by Princeton University Press, Descartes' Meditations: A New Introduction (2003). and, most recently, Epicureanism at the Origins of Modernity (2008). With Desmond Clarke, she edited the Oxford Handbook of Philosophy in Early Modern Europe (2011)