Every now and then, if you’re lucky, you’ll encounter a book that changes your life. History’s great novels have earned a reputation in this regard. While the stories of Homer, Virginia Woolf, Fyodor Dostoevsky, or Jane Austen may not be for everyone all the time, an education in the classics can change people in profound ways and give our minds a meeting place in the world of ideas. Some books take a more direct approach: They explicitly aim to change how readers live their lives. They...