The first time it is given as the immediate certainty of the meditating subject; the second time it is given as a dream which, quite frequently, has just happened; the third time it is given as the immediate certainty of the meditating subject who is pretending, in the full application of his thought, to be a man who is dreaming, so that inside his resolution he persuades himself that it is of no matter, for the progress of his meditation, to know whether he is awake or sleeping.