“Atlas: How to Carry the World on One’s Back?” is a project conceived by Georges Didi-Huberman for the Reina Sofía (it will travel to the ZKM in Karlsruhe and the Sammlung Falckenberg in Hamburg). The operation underlying the project is ambitious, yet simple and plausible: to use the panels of Aby Warburg’s “Mnemosyne Atlas,” 1925–29, to define what might be called the “atlas drive,” a voracious strain of archive fever (to borrow Jacques Derrida’s phrase) that has spread throughout Western culture since what Karl Kraus called “the last days of mankind,” and to illustrate this argument with a