Illustrated conversation with Professor Lars Kristiansson: Based on the conversations Jösta Hagelbäck and Erik Ostlund had with Lars Kristiansson, a professor of information theory with data communication at Chalmers University in Gothenburg, Sweden. The talks took place at the difficult cancer sufferer Kristiansson's sick-bed and dealt with his insights in computer technology, his hopes and fears for the new technology, the role of religion, the history of mathematics, reasoning about algebra, analytic geometry and the fourth dimension, along with cultural outlooks over the Western society's lack of mysticism and spiritual values.