Brahman and Atman
Some
Upanishadic statements identify the
Atman, the inner essence of the human being, with Brahman. While
Advaita philosophy considers Brahman to be without form, qualities, or attributes,
Visishtadvaita and
Dvaita philosophies understand Brahman as one with infinite auspicious qualities. In Advaita, the ultimate reality is expressed as
Nirguna Brahman. Nirguna means formless, attributeless, mega-soul, or spirit-only. Advaita considers all personal forms of God including
Vishnu and
Shiva as different aspects of God in personal form,
Saguna Brahman i.e. God with attributes. In
Visishtadvaita and
Dvaita, God is
Saguna Brahman with infinite attributes and is the source of the impersonal
Nirguna Brahman, and God's energy is regarded as
Devi, the Divine Mother.
The phrase that is seen to be the only possible (and still thoroughly inadequate) description of Brahman that humans, with limited minds and being, can entertain is the
Sanskrit word
Sacchidānanda, which is
combined from
sat-chit-ānanda, meaning "Being - Consciousness - Bliss".
The description of Brahman from
Mandukya Upanishad:
सर्वं ह्येतद् ब्रह्मायमात्मा ब्रह्म सोयमात्मा चतुष्पात्
sarvam hyetad brahmāyamātmā brahma soyamātmā chatushpāt -
Mandukya Upanishad, verse-2
sarvam (सर्वम्)- whole/all/everything; hi (हि)- really/surely/indeed; etad (एतद्)- this here/this; brahma (ब्रह्म)- Brahma/Brahman; ayam (अयम्)- this/here; ātmā(आत्मा)- atma/atman; sah(सः)- he; ayam (अयम्)- this/here; chatus(चतुस्)- four/quadruple; pāt(पात्)- step/foot/quarter
सर्वम् हि एतद् ब्रह्म अयम् आत्मा ब्रह्म सः अयम् आत्मा चतुस पात्
sarvam hi etad brahma ayam ātmā brahm sah ayam ātmā chatus paat
All indeed is this Brahman; He is Atman; He has four steps/quarters.
Vishnu is traditionally derived from the root "Vish" which means to enter or pervade, and He is called
Vishnu because He pervades the whole universe.
Brahmanda Purana (1.4.25) says that He is called as
Vishnu because He has entered into everything in the universe. The most important aspect is that the whole universe is covered by only three steps of
Vishnu which is referred to several times in the Vedas (
Rig Veda 1.22.17, 1.154. 3, 1.155.4,
Atharva Veda 7.26.5,
Yajur Veda 2.25).
In His three steps rests the whole universe (
Rig Veda 1.154.2,
Yajur Veda 23.49). All indeed is Brahman, which can thus be identified with
Vishnu, based on the
Vedas.