He kept writing without sleeping or resting for many days and he slept while sitting at desk when exhaustion reached to the limit, after having enough sleep, he started writing again.
何日間も寝ずに不眠不休で書きつづけ、疲れが限界に来たら、机にむかったまま寝て、十分に寝ると再び起き、また書きつづけるというものだった。