Lucy Ash asks why we draw. Are some people simply more visual than others? And what do we reveal through our drawings?
Drawing is something we all do unselfconsciously as children before we learn to write. It is a form of expression that goes back 40,000 years and began on the walls of caves. But why do we draw? Is it to make our mark on the world, to decorate our surroundings, or is it a way of communicating with others when words fail us?
Lucy Ash talks to Stephen Wiltshire, world famous for his incredibly detailed pen and ink cityscapes; to David Hockney renowned for both his traditional draughtsmanship and his enthusiasm for new technology, and to Lizzie Ellis, who comes from a remote community in central Australia and draws with a stick, telling stories through her traditional form of Aboriginal women's art.

Presenter: Lucy Ash
Producer: Arlene Gregorius
Editor: Andrew Smith

First broadcast on the BBC World Service. Show less