Nietzsche never seemed to lose sight of his own condition: he simulated Dionysus or the Crucified and took a certain delight in the enormity of his simulation. The madness consisted in this delight. No one will ever be able to judge to what degree this simulation was perfect and absolute; the sole criterion lies in the intensity with which Nietzsche experienced the simulation, to the point of ecstasy. [...]
What he was conscious of was the fact that he had ceased to be Nietzsche. [...]
In [eternal] return, everyday things abruptly receded into the distance: yesterday became today, the day before yesterday spilled over into tomorrow.
Klossowski, Nietzsche and the Vicious Circle