The essay, at its best, is a genre shaped by the character of its author. Charles D’Ambrosio describes it as “a forum for self-doubt.” The author’s irresolution runs throughout his new essay collection, Loitering (Tin House Books, 2014). In one piece, he describes watching a crow peck the breast of an injured robin, shortly after his brother’s suicide. Should he intervene? Would it matter? In another, he questions the motives of whale rights activists. Do they want to save whales because they no longer believe people can be saved? D’Ambrosio says that as a child he believed whales rose to