The title of Seamus Heaney's first collection of poetry since winning the Nobel Prize in 1995 is the term used in Ireland for a carpenter's level, an earthy physical allusion to matters of spirit that is quintessential Heaney. And indeed this volume deals masterfully with the finding of a level balancing point in ethical, moral, and spiritual affairs. Heaney has famously likened his craft to the farming activities of his childhood, comparing his pen to his father's spade; here he extends that analogy, comparing the lines of a poem to furrows being plowed in the earth, and "the poem as ploughshare that turns time/ Up and over." Heaney's furrows are straight and clean, his loamy lines abundantly fertile.