Melvyn Bragg explores the strange and mystical world of the Irish poet W B Yeats.
BBC Radio 4
Melvyn Bragg considers whether 'happiness' means living a life of pleasure or of virtue.
Melvyn Bragg examines the Cathars, a medieval European Christian sect accused of heresy.
Melvyn Bragg examines the 20th century development of nuclear physics as a science.
Melvyn Bragg examines the ideas behind the 18th century literary cult of sensibility.