Ome is everything and that which is beyond time. Brahman is the source of all forms. Om is also the name of brahman. An yoga sutra says, tasia wacha kapranava, the name of the absolute,. If you can give it a name at all, is om. All names originate from om so th all names are nothing other than om. The self inquiry should be enough to reveal to us i am braHman. And indeed it is enough. But oh, the om inquiries is introduced here as a support, as a help, as a practice, as a technique. We will use simplea experience waking, dreaming and sleeping in this