And the other Don Quixote remained here among us, fighting with desperation. And does he not fight out of despair? ...But "despair is the master of possibilities," as we learn from Salazar y Torres (Elegir al enemigo, Act I.), and it is despair and despair alone that begets heroic hope, absurd hope, mad hope. [I hope because it is absurd], it ought to have been said, rather than [Credo quia absurdam — I believe because it is absurd].
Miguel de Unamuno