'In his luminous paean to poetry, modestly titled How to Read a Poem, Edward Hirsch writes that ‘poetry is made of metaphor’. This lucid statement is beautiful enough, but as a poet, Hirsch continues, making music, elaborating, forever taking the idea onwards, upwards and outwards, with poetry’s relentless energy: ‘It is a collision,’ he writes, ‘a collusion, a compression of two unlike things: A is B.’' (Introduction)