Paul M. Churchland is Emeritus Professor of Philosophy at the University of California, San Diego. He is the author of The Engine of Reason, the Seat of the Soul, Matter and Consciousness: A Contemporary Introduction to the Philosophy of Mind (both published by the MIT Press), and other books.

Patricia S. Churchland is President's Professor of Philosophy Emerita at the University of California, San Diego, and Adjunct Professor at the Salk Institute for Biological Sciences. She is the author of many books, including Neurophilosophy and Brain-Wise (both published by the MIT Press).