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Are humans distinguished not just by a capacity to think, but by our need to believe - where the search is not so much for my place in the world, but for our place in the cosmos? Neil MacGregor, the former Director of the British Museum, discusses Living with the Gods, his Radio 4 series, in which he focuses on the expression of shared beliefs, across thousands of years, and around the globe, through objects from the Museum's collections and beyond.

The curator Jennifer Sliwka looks at a world in black and white, in a celebration of the monochrome in art across the centuries, from medieval sacred works, where the elimination of colour was thought to focus the mind, to contemporary paintings.

The historian Dan Jones tells the story of the ultimate holy warriors, the Knights Templar, a story of power, politics and fanaticism.

The writer Caspar Henderson takes a step back to consider the awe-inspiring - from divine visions to transcendent moments - and to ask whether we are in danger of losing our sense of wonder in the modern world.

Presenter Andrew Marr
Producer Katy Hickman

Photograph: (c) The Trustees of the British Museum.