For the past decade, social psychologist Jonathan Haidt has been explaining the human condition to us better than just about anyone else.

He did it first with his book The Righteous Mind, which helped explain why people are so passionately divided over politics and religion, and which also made the argument that human beings are fundamentally religiously inclined creatures.

Then, Haidt did it again with The Coddling of the American Mind, which he co-wrote with Greg Lukianoff. The book laid out why kids today—especially on college campuses—have become so intolerant of opinions that conflict with their own, and how this intolerance has impacted the country and our culture.

Now he’s done it once more with his new book, The Anxious Generation: How the Great Rewiring of Childhood Is Causing an Epidemic of Mental Illness.