Lucille Clifton’s poetry carries her deep concerns for the world’s children, the stratification of American society, those people lost or forgotten amid the crushing race of Western materialism and technology. In turns sad, troubled and angry, her voice has always been one of great empathy, knowing, as she says, “the only mercy is memory.” In this, her 12th book of poetry, the National Book Award-winner speaks to the tenuous relationship between mothers and daughters, the debilitating power of cancer, the open wound of racial prejudice, the redemptive gift of story-telling. “September Song,” a sequence of seven poems, featured on National Public Radio, presents a modern-day Orpheus who, through her grief, attempts to heart-intelligently respond to the events of September 11th. The last sequence of poems—a tightly-woven fabric of caveats and prayers—was initially written in the 1970s, then revised and reshaped in the last few years.