The Reason I Jump, by the autistic Japanese teenager Naoki Higashida, was a surprise bestseller in 2013. Rendered as a series of answers to the questions that puzzled those around him, Higashida’s lyrical explanations of his compulsions and unusual behaviours were revelatory and uplifting. Readers felt they understood the condition better as a result. Higashida was described as non-verbal; he composed his earlier book by touching letters on a card with an alphabet grid or tracing them on the palm of a hand. The spelled-out words were transcribed and the text edited by his mother. This sequel, Fall Down Seven Times, Get Up Eight, has been edited together from Higashida’s subsequent blog posts and interviews he gave to the Big Issue in Japan.