"Ranging among subjects as various as parenthood and desire, psychoanalysis and poetry, the essays in On Not Knowing move by surprise, often veering in directions they hadn't let you see they were going. The only certainty in reading them is that every arrival is worth it. Ogden has a knack for developing single words and small inklings into full-blown ideas and philosophies. Her anecdotes are as unexpected, her sentences as exquisite, and her conclusions as moving as Emerson's. Surely this book secures Ogden's place as one of our finest writers: thinking with her is exhilarating."– "Erica McAlpine, author of 'The Poet's Mistake'"