The Coddling of the American Mind which he co-wrote with Greg Lukianoff is an important book about problems faced by the current college-age generation and the effects that social media, helicopter parenting, and certain ideologies have had on them. The Atlantic article it started as is also good, but the book expands and improves on the argument.

It’s less of a classic as the Righteous Mind because it’s more focused on a topical issue. I think it pairs well with Laura Kipnis’s Unwanted Advances.