Highlights and pictures from the fourth day at the Telegraph Hay Festival in Hay-on-Wye, Wales.
• 'All novels are spy novels' - Ian McEwan talked 'Sweet Tooth'
• 'Walking is new church going' - former Bishop of Edinburgh
• Winehouse death should be taken more seriously - David Nutt
• The Office star Mackenzie Crook makes Hay appearance
• Boris Johnson: I won't be PM
• See our gallery of highlights in quotes and pictures
More at The Telegraph