Theosophy teaches that the Soul Triad dwells in Devachan "for a period proportionate to the merit of the being," and from whence in the proper time "the being is drawn down again to be reborn in the world of mortals." The Law of Karma which rules the earth-life of man, and which regulates the details of his rebirth, is said to operate on the Devachnic Plane as well, thus deciding the time of his abode on that plane, and the time when the soul shall proceed to rebirth. The state of existence in Devachan is described at length in the Theosophical writings, but is too complex for full consideration here. Briefly stated, it may be said that it is taught that the life on Devachan is in the nature of a Dream of the Best that is In Us--that is, a condition in which the highest that is in us is given a chance for expression and growth, and development. The state of the soul in Devachan is said to be one of Bliss, the degree depending upon the degree of spiritual development of the soul, as the Bliss is of an entirely spiritual nature. It may be compared to a state of people listening to some beautiful music--the greater the musical development of the person, the greater will be his degree of enjoyment. It is also taught that just as the soul leaves Devachan to be reincarnated, it is given a glimpse of its past lives, and its present character, that it may realize the Karmic relations between the cause and effect, to the end that its new life may be improved upon--then it sinks into a state of unconsciousness and passes on to rebirth.