by Swami Sivananda

Brahman is the highest of all. Om is his name. Om is also your real
name. It covers the threefold experiences of man. From Om this sense
world has been projected. The world exists in Om and dissolves in Om.

Om is the greatest of all mantras (mystic formula). Om bestows direct
liberation. All mantras begin with Om. Om is the life, the soul, of
all mantras. Every Upanishad begins with Om. Oblations that are
offered to the various gods are all preceded by Om. 

All languages, all sounds, come out of Om. The essence of the four
Vedas is Om. A-U-M covers the whole range of sound vibrations. A
starts from the root of the tongue, U proceeds from the middle and M
comes from the end, by closing the lips. 

Om is the source of all religions and scriptures. This sacred
monosyllable is the means of liberation from the bonds of matter. It
leads one, stage by stage, to the highest bliss. It is fit for the
lowest as well as for the highest and most advanced intellect. It is
fit for the Brahmachari (celibate-student) as well as the Sanyasin
(monk). It is fit for any condition.

Om is your birthright. It is the common heritage of all. It is the
word of power. It fills the devotee with spiritual strength, vigour
and energy when chanted with harmony and rhythm. It brings
inspiration and intuition.

It elevates the mind. It is a spiritual food and tonic. It is full of
divine potency. Live in Om. Meditate on Om. Inhale Om. Exhale Om.
Rest peacefully in Om. Take shelter in Om. May that Om guide you.

Om stands for all phenomenal worlds. From Om this sense universe has
been projected. Om has been formed by adding the letters A-U-M; A
represents the physical world; U represents the mental and the astral
planes, the world of spirits, all heavens; and M represents the deep
sleep state and, even in the waking state, all that is unknown,
beyond reach of the intellect. Om therefore represents all. It is the
basis of your life, thought and intelligence. All words that denote
objects are centered in Om - hence the whole world has come from Om,
rests in Om and dissolves in Om.