
Introduction -
 A very important assumption in all vedAnta is that man suffers from 
bondage in the course of his life in this world. This is said to be
sam.sAra, which involves being caught in an endless cycle of births
and deaths. The quest therefore is to seek a way out of this bondage,
to break the cycle of rebirths and attain moksha or liberation. The most
important issues in vedAnta have to be understood with respect to what
constitutes bondage and what constitutes liberation. The advaita school is
of the view that jnAna (knowledge) of man's true nature is liberation.
Bondage arises from ignorance (avidyA) of man's true nature, and
therefore removal of ignorance roots out this bondage. Liberation is
therefore nothing more or nothing less than man knowing his true nature.
This true nature is his innermost essence, the Atman, which is nothing
other than brahman. He who knows this, not merely as bookish knowledge, but
through his own Experience, is liberated even when living. Such a man is a 
jIvanmukta, and he does not return to the cycle of rebirths.
 brahman -
 Causality: pariNAma and vivarta
 -
 Common-sense views of material causality always involve some kind of 
change. Thus, for example, milk is said to be the material cause of curds. 
However, in the process of curdling milk, the milk cannot be recovered. All 
we have at the end is the curds, the milk being irretrievably lost. This 
kind of causality involving change is called pariNAma. There 
is another kind of material causality. For example, gold is the material 
cause of an ornament made out of gold. In the process of making the 
ornament, the metal does not change into something else. It is only drawn 
into another form, from a lump to an ornament; the gold remains gold. This 
kind of causality is called vivarta, where the material 
cause itself does not change into something else. The chAndogya upanishad 
makes very telling use of this kind of causality in its illustrations of 
how "Being" alone is the original cause (sadeva saumya idam agra 
AsIt, ekameva advitIyam), and how all perceived change is only in 
the realm of name and form, dependent on language (vAcArambhaNam
vikAro nAmadheyam). The reality of gold is quite independent of 
what shape it is in. 
 Although SankarAcArya makes use of both kinds of causality (
pariNAma and vivarta) in his analogies, he denies that 
brahman's role as the material cause of the universe involves any change 
in the essence that is brahman. In the logical extreme, both pariNAma
and vivarta views of causality are deficient, as they presume a
separate reality of the effect, apart from that of the cause. Therefore,
the most subtle arguments in advaita vedAnta turn upon the
ajAti vAda notion - that there
is no real creation. vivarta and pariNAma are both seen as
convenient ways of describing causality, only if some provisional reality
is conceded for the notion of creation. Those who follow the dRshTi-sRshTi vAda also maintain that brahman
is beyond all causality. However, most post-Sankaran
authors, who teach in accordance with what is called the
sRshTi-dRshTi vAda, opt for a
vivarta notion of causality, as far as accounting for all creation
is concerned. It should be remembered that the conception of brahman as
both the material and instrumental cause of the universe implies a very
special kind of causality, one that is not similar to any other, and that
cannot therefore be captured completely by any analogy. It is as if brahman
has acted upon itself in order to produce this universe, that is full of
change. Yet, the upanishads abound with
passages denying that any change is possible in brahman, and indeed
SankarAcArya denies that brahman really acts.  brahman is also described as
devoid of all attributes, along with passages that glorify brahman as
ISvara, the Lord of this universe, with infinite attributes.
 nirguNa and saguNa brahman - 
 So much for saguNa and nirguNa brahman. If brahman cannot 
be held to have suffered any change because of creation of the universe, then
what is the status of this universe? Since the cause does not undergo any 
change in the process of producing the effect, it is held that the cause 
alone is Real. The universe only partakes in reality inasmuch as it is to 
be considered as dependent on brahman. Therefore the upanishads say, "
sarvam. khalvidam. brahma." If the universe is considered to be 
independent of brahman, then it has no real Reality, although the world of 
human perception can never reveal this truth. This is simply because 
brahman Itself is never an object of human perception. It is this 
characteristic of dualistic knowledge, derived from perception alone, 
that prompts the advaitin to call it mithyAjnAna (false knowledge). 
 avidyA and mAyA -
 brahman = Atman -
 This doctrine of advaita should not be misinterpreted to mean that the 
human self is in and of itself God, without any qualification whatsoever. 
SankarAcArya most emphatically asserts that such is not his intention. On 
the other hand, he is at great pains to point out that one who is desirous 
of moksha needs to overcome his human shortcomings in order to achieve full 
liberation. Sankara prescribes rigorous prerequisite qualities for the 
person who is to study vedAnta. These form the practical aspect of the 
effort to rise above and sublate the characteristics of the human jIva, 
in order to understand the Atman/brahman. The non-dual reality of the 
Atman is revealed to the intense seeker, as an experience that defies 
words. One might call it a mystic experience of brahman, in which to know 
brahman is to be brahman. Thus, rather than being atheistic or non-
theistic, advaita vedAnta is meta-theistic: it points to the basic 
underlying Reality of all, including what humans call God, what humans call
the universe, and what humans call human. This Reality is the unchangeable
brahman. 
 tattvamasi -
  
 Sankara explains tattvamasi as follows. tat is a common 
designation for brahman in the upanishads, while tvam (thou) 
addresses the student. The sentence states an equation of two seemingly 
different entities tat - that, and tvam - thou, by means of 
the verb asi - are. In general, brahman (tat) is commonly 
understood as ISvara (saguNa brahman), with an infinity of attributes, 
including the power of creation. tvam is the individual who is 
bound, who is embodied, and who is in need of liberation. The difference 
between tvam and tat seems to be a matter of common knowledge 
for all individuals. What is the reason for the upanishad to teach an 
identity then? An identity cannot be stipulated, even in infallible Sruti, 
if there is a real difference. Keeping in mind that Sruti is infallible, 
advaita therefore concludes that really there is no ultimate difference 
between tat and tvam. 
 The identity expressed in a statement like tattvamasi is 
therefore held to be Real, and its realization constitutes the height of 
knowledge (jnAna). Direct experience of this jnAna is in 
fact moksha. It also follows that since this identity is not perceived 
normally, difference arises out of avidyA, ignorance of the true 
nature of Reality. Since Sruti is superior to perception, this identity 
is indeed the supreme truth, all difference being in the realm of relative 
perception. If non-dualism is the true nature of Reality, why is this 
difference perceived in the first place? Given advaita's basis on the 
non-dualistic scriptures, the perception of difference remains, in the 
final analysis, inexplicable. This is labeled "anirvAcya/anirvacanIya
" in advaita - something that can never be fully understood by the 
human mind. Since perception of duality presupposes avidyA, no 
amount of logical analysis, itself based on this duality, will 
satisfactorily explain avidyA. Hence, SankarAcArya is not much 
interested in explicating avidyA, except to acknowledge its 
presence in all human activity, and in trying to overcome it to 
understand brahman. 
 vyavahAra and paramArtha -
 Note: The standard vedAntic position
is that brahman is both the material and the instrumental cause of the 
universe. This is a notion shared by advaita, viSishTAdvaita and the various
bhedAbheda schools of vedAnta. The dvaita school denies that brahman can be 
the material cause of the universe, and (in my opinion) goes against the 
brahmasUtras in the process.
 There is a large body of literature on advaita vedAnta. Check the
bibliography page for a list of references.
The advaita philosophy is not easy to explain briefly, and it is not 
my intention to repeat in a www home page what takes whole volumes for 
accomplished experts. I will content myself with providing a brief 
synopsis of the various aspects of advaita vedAnta. 
It may be noticed that at first glance, advaita's solution to the problem
of man's liberation does not seem to involve God as a Creator or a Savior at 
all. If all that is required is to know one's own true nature, what role 
does God have to play in this universe? advaita's answer to this issue is 
buried in the advaitic conception of brahman. One is the view of the 
brahmasUtra that brahman is at once both the instrumental and the 
material cause of the universe. The brahmasUtra holds such a view 
because there is nothing that can be said to exist independent of brahman. 
Is brahman then just a name for a universal set - the superset of all 
things in this universe? Not so, because brahman has been described as beyond
all change, whereas the perceived universe is full of change. Still, this
universe is said to have brahman as the only cause. At the same time, to
understand brahman truly is to know It to be devoid of parts and diversity,
and beyond all causality/action. Such a conception of brahman derives from
the upanishads, which say sarvam 
khalvidam brahma - all this is indeed nothing but brahman - on the one
hand, and neha nAnAsti kincana - there is no diversity here - on the
other. Thus, the conception of brahman as a Creator in advaita is a unique
one, and directly relates to the advaita views on causality. 
There are different theories of causality 
described by advaita vedAntins, but they are all agreed that brahman is 
the sole cause of the universe, i.e both the instrumental and the material 
cause of the universe. The axiom that the One brahman is the cause of the
many-fold universe is the foundation on which the entire system of advaita
vedAnta is based, and numerous efforts have been made over the centuries,
to address logical problems arising out of
it. This brahman is also held to be eternal and changeless. It is easy to
understand brahman as the instrumental cause of the universe. This view is
not very different from the traditional perspective shared by almost all
religions - some creator is usually credited with having created this
universe. This creator is the instrumental cause of the universe. What
differentiates the standard vedAnta position 
from such general theistic views is that brahman is simultaneously also 
the material cause of the universe. In other words, creation is never ex 
nihilo, but proceeds out of brahman Itself, although brahman remains 
unchanged.
To resolve such passages in the upanishads, advaita vedAnta maintains 
that really brahman is devoid of all attributes, and is therefore known as 
nirguNa. brahman may be described as in the upanishads, as 
Truth (satyam), Knowledge (jnAnam), Infinite (anantam), 
or as Being (sat), Consciousness (cit), Bliss (Ananda), 
but none of these terms can be truly interpreted as attributes of brahman as
a Super-person/God. Rather, it is because brahman exists, that this whole
universe is possible. It is because brahman exists that man ascribes
attributes to brahman. However, brahman's true nature cannot be captured in
words, for all these attributes are ultimately just words. Hence, it is man's
ignorance of Its true nature that postulates attributes to brahman, thereby
describing It in saguNa terms (with attributes). This saguNa
brahman is ISvara, the Lord, whose essential reality as brahman is not
dependent on anything else, and does not change because of the production of
this universe. Therefore, advaita holds that brahman's own nature (svarUpa-
lakshaNa) is devoid of any attributes (nirguNa), while It is 
seen for the temporary purposes of explaining creation (taTastha-
lakshaNa) to be ISvara, with attributes (saguNa).
Why does human perception fail to see brahman directly? SankarAcArya 
attributes it sometimes to avidyA (ignorance) and sometimes to 
mAyA (the power to deceive). As the bRhadAraNyaka upanishad puts it, 
"vijnAtAram. are kena vijAnIyAt?" - How is the Knower Itself to be 
known? It also stands to reason, therefore, that any effort at 
characterizing brahman falls far short of brahman. No words reach brahman; 
how can mere verbal descriptions claim to describe It? advaita now turns 
to the ancient technique of adhyAropa-apavAda (sublation of 
superimposition) to explain this. Thus, although brahman is called the 
instrumental and material cause of the universe, advaita tells us that 
this is only a preliminary view of brahman, motivated by a need to explain 
creation of the universe. In order to understand brahman, one has to go 
beyond this preliminary view, and understand brahman in Itself, not 
necessarily in relation to the universe. Then it is understood that the 
whole universe is only superimposed on the underlying Reality that is 
brahman. To really know brahman, one needs to sublate this superimposition, 
and look at the substratum (adhishThAna) that is brahman. As for the
exact nature of avidyA and mAyA, later
authors seem divided into two major schools of thought, namely the
bhAmatI and the
vivaraNa schools.
What then of the human self, the jIva? It is here that advaita comes 
up with the most radical answer, one that is unacceptable to all other
schools of vedAnta. According to advaita, what is called the universe is
in reality not other than brahman. Similarly, what is called the jIva is
in reality, the Atman, which is also nothing other than brahman Itself.
The real jIva is the Atman, which is unchanging, ever free, and identical
with brahman. This is said on the basis of upanishadic passages where the
Atman is explicitly equated with brahman.  This equation of Atman with
brahman is also explained by means of adhyAropa-apavAda. By sublating
the superimposition of human shortcomings and attributes on the Atman, the
pure Atman, the substratum, shines forth as brahman Itself. The mani-fold
universe and the individual self, which considers itself bound, are both
superimposed upon that Transcendental Reality which is brahman. Once the 
superimposition is understood for what it is, the individual is no more an
individual, the universe is no more the universe - all is brahman.
At this juncture, it is instructive to look at the advaitin 
interpretation of the chAndogya statement tattvamasi, following 
SankarAcArya. This is one of the four statements that have become well-
known as the upanishadic mahAvAkyas, which equate Atman with brahman. The 
four most important mahAvAkyas (one from each veda) are:
 - "ayamAtmA brahma" 
(muNDaka)
 - "ayamAtmA brahma" 
(muNDaka)
 - "tattvamasi" 
(chAndogya)
 - "tattvamasi" 
(chAndogya)
 - "aham brahmAsmi" 
(bRhadAraNyaka)
 - "aham brahmAsmi" 
(bRhadAraNyaka)
 - "prajnAnam brahma" 
(aitareya)
 - "prajnAnam brahma" 
(aitareya)
This exegesis of scripture leads to the well-known advaitic doctrine 
of two levels of understanding: vyAvahArika satya (phenomenal or 
relative reality or just "reality", where duality is seen) and 
pAramArthika satya (transcendental reality, or "Reality", non-duality). 
One important upanishadic source for advaita vedAnta's theory of two levels 
of truth is the analysis of the Atman as "neti, neti" - not this, 
not this. This is from the bRhadAraNyaka upanishad. This upanishad also 
describes the highest state of the Atman in purely non-dualistic terms - 
"yatra tvasya sarvam AtmaivAbhUt, tatra kena kam paSyet? ..... 
vijnAtAram. are kena vijAnIyAt?" - Where the Atman alone has become 
all this, how is one to see another? ..... How is the Knower to be Known? 
Most advaitins point to the quotation from the bRhadAraNyaka that 
immediately precedes this: "yatra tu dvaitamiva bhavati, ..." - 
where there is duality, as it were, ... - as the scriptural basis for 
saying that perception of duality is an appearance only, "as it were" and 
not the supreme Reality. This rejection of all characterization as partial 
at best, and ultimately untrue, means that the Atman is beyond all duality, 
and all attempts to describe It fail, because language itself presupposes 
duality. This via negativa approach is very much favored in advaita 
vedAnta. This emphasis on identifying the Atman with brahman by means of 
sublating the commonly understood characteristics of each term, to affirm 
the real nature of the Atman, is central to advaita vedAnta.
 References:
 References:
 
Last updated on May 5, 1999.
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