Steven Pinker is the Johnstone Family Professor in the Department of Psychology at Harvard University. He conducts research on language, cognition, and social relations, writes for publications such as the New York Times, Time and The Atlantic, and is the author of twelve books, including The Language Instinct, How the Mind Works, The Blank Slate, The Stuff of Thought, The Better Angels of Our Nature, The Sense of Style, Enlightenment Now, and Rationality: What It Is, Why It Seems Scarce, Why It Matters.