"Poetry," wrote Wordsworth, "is the breath and finer spirit of all knowledge; it is the impassioned expression which is the countenance of all Science." Robert Pack's new book is a heady mixture of the finer spirit. A selection from his last five books, along with a collection of new poems, Fathering the Map takes us from the personal reflections distilled in the lyrics of Waking to My Name (1980) to the worldly reckonings of Inheritance (1992) and back again. In the dramatic monologues of Faces in a Single Tree (1984), in the narrative of a wayward life from womb to double ending in Clayfield Rejoices, Clayfield Laments (1987), in a cosmic tour conducted by the physicist Heinz Pagels with Before It Vanishes (1990), Pack has fashioned poems of intimate experience, scientific meditations, philosophical wonder, poems that breathe the knowledge of man and woman, young and old, artist and human animal.