"This is a book about wisdom and its opposite. The book grows out of a trip that we (Greg and Jon) took to Greece in August of 2016. We had been writing about some ideas spreading through universities that we thought were harming students and damaging their prospects for creat- ing fulfilling lives. These ideas were, in essence, making students less wise. So we decided to write a book to warn people about these terrible ideas, and we thought we'd start by going on a quest for wisdom ourselves. We both work on college campuses; in recent years, we had heard repeated refer- ences to the wisdom of Misoponos, a modern-day oracle who lives in a cave on the north slope of Mount Olympus, where he continues the ancient rites of the cult of Koalemos.