Book excerpt: Don Paterson is not only one of our great poets, but also an esteemed authority on the art of poetry. In illuminating and engaging prose, he offers his treatise on the making and the philosophy of 'the poem'.Paterson unpicks the process of verse composition with ambition, scholarly flair, and occasional scurrilities, exploring the mechanics of how a poem works and, essentially, what a poem is. His findings take the form of three essays that make up the three sections of the book: 'Lyric' attends to the sound of the poem; 'Sign' envisages ideas of poetic meaning; while 'Metre' studies its underlying rhythms. Through his various professional guises - as poetry editor at Picador Macmillan, professor of poetry at the University of St Andrews, and major prize-winning poet - no one is better placed to grant this 'insider's perspective'. For all those intrigued by the inner workings of the art form and its fundamental secrets, The Poem will surprise and delight.