Written by Antony Jay.
A portrait of Sir Lawrence Bragg.
Sir Lawrence Bragg is one of the world's most distinguished scientists, and the only one ever to celebrate the fiftieth anniversary of winning the Nobel Prize.
Tonight's programme enlists the aid of his friends, his family, his fellow Nobel Prizewinners, and Sir Lawrence himself, for an unusually clear insight into what makes a great scientist - and a great man.
See page 53