In the Words section, Tacita Dean discusses her personal quests with writer Travis A. Diehl; Eric Banks traces the midcentury journeys of famed travel writer Wilfred Thesiger; Alexander Stille looks at Italian mountain-photography pioneer Vittorio Sella; writer Sean O'Toole profiles the documentary projects of the Invisible Borders Trans-African Photographers Organisation, a West African photography collective; and multidisciplinary artist Taryn Simon speaks with Kate Fowle, of Moscow's Garage Museum of Contemporary Art, about an artwork set for completion in the year 3015.