Melvyn Bragg is joined by philosopher Angie Hobbs, lawyer Harry Potter, neuropsychologist Paul Broks and theologian Giles Fraser to exchange ideas on freedom.

A new history of ideas presented by Melvyn Bragg but told in many voices.

Melvyn is joined by four guests with different backgrounds to discuss a really big question. This week he's asking what does it mean to be Free?

Helping him answer it are philosopher Angie Hobbs, criminal barrister Harry Potter, neuropsychologist Paul Broks and theologian Giles Fraser.

For the rest of the week Angie, Giles, Harry and Paul take us further into the history of ideas with programmes of their own.

Between them they'll talk about Isaiah Berlin's distinction between positive and negative freedom, JS Mill's thoughts on individual liberty and the state; what neuroscience has to say about the age old philosophical debate about Freewill and whether freedom is over-rated as a political, moral and psychological concept.