Seamus Heaney talks to Patricia Lysaght, editor of Folklore, about the influence of the Irish language and culture on the poetry of WB Yeats.
For much of Yeats' life he worked closely with Lady Gregory.
Although she appears in many of his poems, Lady Gregory is rarely remembered for her work as a collector of folklore.
Unlike Yeats, she had learnt the Irish language and she certainly brought him into contact with the living myths and beliefs of the 'invisible world' of Irish world.
Patricia Lysaght explores the role of Irish language culture in Yeats' - and Heaney's - verse.