The only reason that this activity had become such a salutary and even soothing one for my shattered nerves was that playing through games that were not my own did not involve me personally; it was all the same to me whether Black or White won, it was Alekhine or Bogoljubov who was battling for the laurels of the champion, and I as a person, my intellect, my spirit took part solely as an observer, as a connoisseur of the peripeteias and the beauties of each game. But from the moment I began to play against myself, I began unwittingly to challenge myself. Each of my two selves, the black one and the white one, had to vie against the other, and each conceived its own ambition, its own impatience, to gain the ascendancy, to win; after each move as White, I was in a fever to know what Black would do. Each of the two selves exulted when the other made a mistake and became exasperated at its own bungling.