The second of a series of four programmes on the development of the religious life in man.
"When people believe something, they need to express it in ritual and building. But something dies there."
Tonight's programme examines both the need and the failure.
After the film, the sociologist Dr. William Russell will be talking to Magnus Magnusson about the issues raised.
Film commentary read by Paul Rogers
Written and produced by Peter Firth
From the South and West
(Repeated tonight at 11.27)