W.S. Merwin was arguably the most influential American poet of the last half-century - an artist who has transfigured and reinvigorated the vision of poetry for our time. An essential voice in modern American literature, he was United States Poet Laureate in 2010-11. The Moon Before Morning is a love letter composed in a stunning rush of memory. Answering the call set forth in The Shadow of Sirius (2009), which won him his second Pulitzer Prize, Merwin extends the emotional and intellectual reach of that collection with passionate reverence for the natural world, bittersweet reflection on time's irrevocable ravages, and equanimity informed by a lifetime of writing and practised contemplation. Merwin's studied precision in form and language filters crisp, beautiful images through ethereal memory, forging an intense bond between the writer and a quickly transforming world. 'When we forget,' Merwin writes, others will remember: no action or spirit on Earth is without its infinite reverberations.