With Gracie Allen as their uninhibited Muse, Lloyd Schwartz's poems strike an unusual balance between comedy and pathos. His exuberant interest in the social world is qualified by a poignant sense of time and mortality, and of the interior, inaccessible zones of life. "Like a latter-day Whitman, an addict of contraries or its victim, Schwartz sets out to understand that network in as many ways as his imagination allows. Once you get the hang...