Object Lessons is a series of short, beautifully designed books about the hidden lives of ordinary things. “You are what you eat.” Never is this truer than when we use medications, from beta blockers and aspirin to Viagra and epidurals—and especially psychotropic pills that transform our minds as well as our bodies. Meditating on how modern medicine increasingly measures out human identity not in T. S. Eliot’s proverbial coffee spoons but in 1mg-, 5mg-, or 300mg-doses, Pill traces the uncanny presence of psychiatric pills through science, medicine, autobiography, television,...