On this episode of World of Ideas, Bill Moyers talks with the physician-philosopher about the questions science can't answer, including the idea of soul.

The liberal religious leader talks about why even the faithful should cultivate doubts, how to question our virtues, and what we'd learn from an evening with Jerry Falwell.

The renowned ethicist talks about breaking and keeping the public trust.

One of America’s best-known historians talks about how modern politicians differ from those of the American Revolution.

Author Chinua Achebe talks with Bill about the challenges of forging cultural identity in postcolonial Africa.

In this episode, Bellah talks to Bill Moyers about the relationship of religion to politics and society.

The author of the literary classic Catch-22 joins Bill Moyers to talk about democracy, American politics and why he hasn't voted in 20 years.

The physicist and astronomer talks with Bill about scientific inquiry, modern breakthrough in science, and the threat of nuclear war.

The Mexican writer has created a role for himself as interpreter of North and South America, explaining each to the other.

Part two of Bill's conversation with the British filmmaker about popular movies, their power to change society, and moviemakers and their values.