At the end of Maggie Nelson’s arresting new book, she offers a disclaimer: ‘This work conjoins dream and reality; all representations of people, places and events should be understood in that spirit.’ By the second page, though, it has already become apparent that while this work is peppered with recognisable biographical details, Pathemata: Or, the story of my mouth operates in new terrain. Here the limits of reality and dream are at times sufficiently porous that one wonders whether a particular passage belongs to the writer’s conscious or unconscious life.