Stephen Fry and Jude Law describe Hay Festival's lasting appeal
25 May 2015 Last updated at 13:45 BST
The 10-day Hay Festival is under way, with thousands of visitors enjoying books and debate, in the Powys border town.
Stephen Fry and Jude Law are among the star guests this year, to what former US President Bill Clinton described as "the Woodstock of the mind".
The BBC's Rebecca Jones reports.