In her 1982 essay, "Living Like Weasels," Annie Dillard emphasizes the value of living instinctively, of pursuing one's life purpose with staid determination. She argues that life is best lived in the moment, forgetting all that surrounds you and embracing your time here with passion. One of her illustrations is a powerful one. She tells of a man who shot an eagle, only to find a weasel skull attached to its neck.The eagle apparently had taken hold of the weasel, which then instinctively turned for survival to bite into the eagle's neck. Important to Dillard's essay is the contrast she strikes between mindlessness and consciousness, between living in "necessity"-- in spontaneous commitment to present circumstance with no regard for one's surroundings-- and living in choice, fully aware of the consequences of one's actions. It is a theme she lays down both here and as part of a memoir she penned five years later, called An American Childhood . ...