Didi-Huberman takes the reader on a journey between the impossible limit of the horizon and the arrival into a site of reverie and light, from the story of Exodus to the Pala d’Oro of San Marco’s Basilica in Venice, through art history and the origins of religious worship, finally plunging into Turrell’s cadmium dust and light, into the Painted Desert of his installation . For the esteemed art historian, Turrell’s artistic practice becomes the equivalent of walking along endless pathways in the desert, in “minuscule cathedrals where man discovers himself walking in color.”