Literary history is ripe with eloquent attempts to answer the ever-elusive question of why writers write. For George Orwell, it resulted from four universal motives. Joan Didion saw it as precious access to her own mind. For David Foster Wallace, it was about fun. Joy Williams found in it a gateway from the darkness to the light. For Charles Bukowski, it sprang from the soul like a rocket. In Why We Write: 20 Acclaimed Authors on How and Why They Do What They Do (public library), which also gave us Mary Karr’s poignant answer, celebrated Chilean American author Isabel Allende offers one of the most poetic yet practical responses to the grand question.