Subsequently, the sounds of the centers of the upper Realms are subtler than the sounds of the lower realms. Therefore, the sound originated from the center of the above realm and is sequentially grasped from the realm immediately under it. For example, the sound of the Subtle Realm can be grasped from the center or core of the Gross Realm; the sound of the Causal Realm can be grasped from the center or core of the Subtle Realm. The sequence progresses until the Divine Sound which originated from the center of the Realm of Pure Consciousness or the Supreme Sovereign will be grasped from the center of the Supra-Causal Realm. The consciousness drawn by the sound will meet with the Supreme Sovereign and after becoming one will lose its existence. This is the culmination of the spiritual journey, the journey of seeking direct knowledge of the Supreme Sovereign.
The Original Divine Sound, which originated from the Supreme Sovereign, continuously without break reverberates throughout the hearts of the entire macrocosm and microcosm. The Sound will inherently go on for the duration of creation because the evolution of creation depends upon the existence of sound. Should the Sound cease so would creation. The ancient sages call this Original Supra- Cosmic Sound Om. The literature of Indian saints speaks of the Original Sound as the Nirguna Ram Nam (Unqualified All Pervading Sound), Satya-nam (the Eternal Sound), Adi-nam (Eternal Word, the Name or Sound of the beginning) and Sar Shabd (the Quintessential Sound). It is therefore useless to search the streams of the spiritual sounds outside oneself. This task of holding sounds will be accomplished through following the internal spiritual path under the guidance of a spiritual master. Through the practice of meditation one can progressively move the consciousness inward within oneself. In the beginning the practice of subtle meditation is difficult to accomplish owing to its unfamiliarity. Through the initial practice of Manas jap (repetition of mantra [simran]), the mind begins to focus. Then one progresses to the subtler practice of Manas dhyan (dhyan, the form of deity) and prepares for the subtle meditation. Subsequently, through Drshti Yoga [Yoga of Inner Light] one practices one-pointedness. Finally, through the practice of Surat-Shabd-Yoga (the Yoga of Sound) the transcending of all the Realms is achieved. -- Maharishi Mehi Paramahansa Ji, The Philosophy of Liberation (Moksha-Darsan)
