Michael Ruse is Professor Emeritus at the University of Guelph, Ontario. He is a Guggenheim Fellow, a Gifford Lecturer, a Fellow of the Royal Society of Canada, and the recipient of four honorary degrees. He is the author/editor of over sixty books, including The Cambridge Encyclopedia of Darwin and Evolutionary Thought (Cambridge University Press, 2013); The Gaia Hypothesis: Life on a Pagan Planet (University of Chicago Press, 2013); Darwinism as Religion: What Literature Tells Us about Evolution (Oxford University Press, 2016), and The Cambridge History of Atheism (Cambridge University Press, 2021).