An autobiographical memoir, romantic science, writerly nonfiction, rhapsodic nonfiction, the fiction of nonfiction—whatever one calls this we call this writing that matters. And How Are You, Dr. Sacks?: A Biographical Memoir of Oliver Sacks by Lawrence Weschler is a book that can only be itself, like its legendarily kind, genius, and eccentric subject could only be himself. This book is a guide into Oliver Sacks’s realm of rapture. Lawrence Weschler discusses the fictive elements of nonfiction writing: structure, irony, voice, tone, the paradox of form and the paradox of freedom.