Bryan Walpert's fourth collection of lyric poems ranges in its focus from flowers to infinities, from laundry to eternity, but is founded most fully on what it is to move into middle age - to wait still for life's promised brass band to arrive. Whether writing from the perspective of a parent watching childhood slip away or ventriloquising the 17th-century scientific language of Robert Hooke and Robert Boyle to craft surprising love poems, he engages the world with a keen and often witty perception, a deft juggling of the sentence, and a sense of wonder. Frequently playful in approach, the poems are always serious in their engagement with the bewildering nature of time passing - of growing up, and growing old.