some of the happiest moments of my life have occurred just before I fall asleep or wake up, when I linger in that twilight world between consciousness and unconsciousness, in a state of somnolent repose but also savoring the vital goodness of remaining this close to the vegetative in myself
Like the bat, the Sufi is asleep to 'things of the day' - the familiar struggle for existence which the ordinary man finds all-important - and vigilant while others are asleep. In other words, he keeps awake the spiritual attention dormant in others. That 'mankind sleeps in a nightmare of unfulfillment' is a commonplace of Sufi literature