Three essays that demonstrate wonderfully the way self-implication can visibly shape a piece of nonfiction writing are Joan Didionâs âIn Bed,â Harry Crewsâs âWhy I Live Where I Live,â and Edward Hoaglandâs âThe Courage of Turtles.â In each case, the piece begins in a tone of voiceâone elegant, one swaggering, one reasonableâthat announces a position. As the essay progresses this tone modulatesâit softens, it inquires, it invites speculation. Modulation causes the narratorâs position to alter. That process of alteration is at once the conduit for the story being told and, in some important way, the story itself. We are in the presence, in each instance, of a mind puzzling its way out of its own shadowsâmoving from unearned certainty to thoughtful reconsideration to clarified self-knowledge. The act of clarifying on the page is an intimate part of the metaphor.