The Right Side of History: How Reason and Moral Purpose Made the West Great is a 2019 book by American conservative political commentator Ben Shapiro. Shapiro was inspired to write the book after an incident at California State University, Los Angeles in which protesters interrupted his speech. The book was #1 for non-fiction books on the April 7, 2019 New York Times Best Seller list. Reception of the book's coverage of philosophy and history, as well as the arguments presented within it, was mixed.