This slim book of speeches given by climate activist Greta Thunberg is repetitive, which emphasizes her passion and singleminded dedication to her crusade. “This is a crisis,” she tells anyone who who will listen. “Your house is burning down.” She recites the evidence in frustration, but what is really fascinating are the excuses she’s heard and the suggestions for why her message is falling on deaf ears. “Panic never works,” she’s told. And she should go back to school and study to be climate scientist, or leave the problem in the hands of adults. Changing our habits is too expensive, would be a job-killer, would impact too many industries. No wonder I she’s so single-minded.