In 'Sleeping On It', Mark Tully asks how real problem solving is best achieved: by the unconscious or by rational thought. How can we use contemplation, meditation or objective reasoning to solve our immediate problems and what is the best way to achieve that distance or objectivity that best helps us find solutions. Mark asks why Archimedes was best able to solve his famous mathematical problem in the bath, why Mozart was happiest composing on a walk and how it is that he himself finds solutions in a traffic jam. He discusses Eureka Moments, logical thought and wasting time with Professor Guy Claxon, author of 'Hare Brain, Tortoise Mind'. Readings include the work of Sufi master, Rumi, and the poetry of Eammon Grennan and music ranges from Bizet to Johnny Nash. Producer: Frank Stirling A Unique production for BBC Radio 4.