Tara Westover was 17 the first time she set foot in a classroom. Born to survivalists in the mountains of Idaho and isolated from mainstream society, she lacked any formal education. So she began to educate herself. She taught herself enough mathematics and grammar to be admitted to Brigham Young University, where she studied history, learning for the first time about important world events like the Holocaust and the civil rights movement. Her quest for knowledge transformed her, taking her over oceans and across continents, to Harvard and to Cambridge. Only then would she wonder if she’d traveled too far, if there was still a way home.