Taking Robert Graves' phrase Goodbye to All That as their starting point, five writers from countries involved in the First World War reflect on a turning point moment in their own histories and interpret the phrase with the ambiguity that Graves intended.

These five essays that have been curated by writer Lavinia Greenlaw to mark the centenary of the outbreak of World War One, as part of 14-18 Now, a major cultural programme across the United Kingdom.

Tonight, Colm Toibin tells the story of Lady Gregory's fighter pilot son, whose death inspired one of Yeats' most famous poems, 'An Irish Airman Foresees His Death'.

Written and read by Colm Toibin