The New Ennui Dictionary of Quotes

"Being exhausted is much more than being tired. It's not just tiredness, I'm not just tired, in spite of the climb.' The tired person no longer has any (subjective) possibility at his disposal; he therefore cannot realize the slightest (objective) possibility. But the latter remains, because one can never realize the whole of the possible; in fact, one even creates the possible to the extent that one realizes it. The tired person has merely exhausted the realization, whereas the exhausted person exhausts the whole of the possible. The tired person can no longer realize, but the exhausted person can no longer possibilize. 'That the impossible should be asked of me, good, what else would be asked of me.' There is no longer any possible; a relentless Spinozism. Does he exhaust the possible because he himself is exhausted, or is he exhausted because he has exhausted the possible? He exhausts himself in exhausting the possible, and vice-versa. He exhausts that which, in the possible, is not realized. He has done with the possible, beyond all tiredness, 'for to end yet again.'"

Gilles Deleuze, "The Exhausted"