Utopias travel about underground, in the pipes. There they branch out in every direction. They sometimes meet, and fraternize there. Jean-Jacques lends his pick to Diogenes, who lends him his lantern. Sometimes they enter into combat there. Calvin seizes Socinius by the hair. But nothing arrests nor interrupts the tension of all these energies toward the goal, and the vast, simultaneous activity, which goes and comes, mounts, descends, and mounts again in these obscurities, and which immense unknown swarming slowly transforms the top and the bottom and the inside and the outside. Society hardly even suspects this digging which leaves its surface intact and changes its bowels. There are as many different subterranean stages as there are varying works, as there are extractions. What emerges from these deep excavations? The future.