What doesn’t kill you makes you weaker. Always trust your feelings. Life is a battle between good people and evil people. These three Great Untruths contradict basic psychological principles about well-being, as well as ancient wisdom from many cultures. And yet they have become increasingly woven into education, culminating in a stifling culture of ‘safetyism’ that began on American college campuses and is spreading throughout academic institutions in the English-speaking world. In this book, free speech campaigner Greg Lukianoff and social psychologist Jonathan Haidt investigate six trends that caused the spread of these untruths, from the decline of unsupervised play to the corporatisation of universities and the rise of new ideas about identity and justice.