The ancient Athenian Socrates encourages us to think about what are the most important things in life and to bring real clarity to the ideas, concepts and beliefs that we use every day. He was persistent, brilliant, possessed of an intellectual curiosity and rigour that few have matched. Naomi Alderman explores the mind of this mercurial and fleeting figure – he has left us with no written work and our only sense of him is through the experiences and writings of others.

Special thanks to Dr Frisbee Sheffield, Associate Professor of Classics at the University of Cambridge.

Produced by BBC Studios Audio in partnership with The Open University.