Ultimate truth or Brahman is nothing to do with the experience of birth,life,death and the world.  The experience of birth,life,death and the world  are product of ignorance because they are based on the form whereas the self is formless. If there is no ignorance than  the   experience of birth,life,death and the world are mere mirage. 
Thus it is necessary to overcome  the ignorance,  to realize the experience of birth,life,death and the world are mere mirage.
As one goes in deeper self-search he becomes aware of the  illusory
division between the spirit and the matter.  in reality 
there is no division between the spirit and the matter because matter is mere illusion created out of consciousness. Simply recognizing the
whole  experience of birth,life,death and the world as matter. And the  formless substance and witness of the whole experience of the experience of birth,life,death and the world  as  spirit. thus the matter is created out of spirit therefore matter is spirit in its essence. this spirit alone is real and matter mere illusion.   
The experience of birth,life,death and the world is mind. Mind is in the form of universe. Universe appears as waking or dream and disappears as deep sleep.   That is matter appears as  mind( universe or waking or duality)  and disappears spirit(deep sleep or non-duality) . 
Mind  or universe or waking or duality  is matter.  Matter is created and sustained by spirit and  finally dissolves as  spirit. thus no second thing exists other than the spirit.  the spirit is the soul. the soul is the innermost self. the innermost self is in the form of consciousness. 
A  Gnani 
beholds the  the  consciousness  everywhere and in everything --- be it in mountain rock, flowing
river, cloud, trees, sky sun, star, moon and planets in animal and all the
creatures.
Gnani fully aware of the fact that the whole universe ,which appears as waking or dream 
is created and sustained and finally dissolves as consciousness . for a Gnani the diversity is mere mirage created out of consciousness. 
Form the standpoint of the formless soul, the innermost self , the three states are    mere
illusion.  The individual  experience of birth, life  death  and the world are part of  the illusory waking
experience.  Thus instead of searching
the remedy for the suffering  in the practical life within the practical world one has to  realize the waking experience is  mere illusion. 
Seeker has to realize  on what stand point the universe is illusion.  By knowing the existence of  formless witness of the three states one becomes aware of the the fact that, the three states are illusory in their nature. The formless  soul or consciousness , the innermost self is the formless substance and also the  witness of the three states,which comes and goes in succession. On knowing the  formless soul or consciousness, the innermost self,  one  realizes the form,time and space are one in essence. 
Soul or consciousness , the innermost self is whole undivided
eternal without difference of any kind. But some  hold  that
universe is come out of nothing. but they are unaware of the fact that  That nothingness itself is consciousness, the cause of the the three states and it itself is uncaused.  Therefore nothingness or emptiness has no meaning.   In the states of  ignorance, the  formless soul or  consciousness exist in the form of mind or universe or duality but  in reality nothing exists other than consciousness. 
When one acquires Self- Knowledge  or Brahma Gnana or Atma Gnana  than  the three states become and object the the soul, which is the subject. the subject and object are one in essence because the object is created out of the subject. 
Religionists  think  that the Self-Knowledge  or Brahma Gnana or Atma Gnana are the private property of the religious scholars. it
is meaningless to seek Self-Knowledge through religion and yoga because they
are based on the ‘ waking entity ’ as self which is the false self within the false experience. 
 That
is Sri Sankara, in Bhaja Govindam says: - [Jnana Viheena Sarva Mathena
Bajathi na Muktim janma Shatena] - one
without knowledge does not obtain liberation even in a hundred births, no
matter which religious faith he follows. 
Thus it
proves that wisdom is universal irrespective of any religion of faith one
belongs.  Thus religion is not the means
to self-knowledge.  Thus Sri, Sankara’s
Advaita minus orthodoxy is true Advaita. 
Sri Sankara himself says [VC]
56. Neither by Yoga, nor by Sankhya, nor by work, nor by
learning, but by the realisation of one's identity with Brahman is Liberation
possible, and by no other means. 
58. Loud speech consisting of a shower of words, the skill in
expounding the Scriptures, and likewise erudition - these merely bring on a
little personal enjoyment to the scholar, but are no good for Liberation.
 59. The study of the
Scriptures is useless so long as the highest Truth is unknown, and it is
equally useless when the highest Truth has already been known.
60. The Scriptures
consisting of many words are a dense forest which merely causes the mind to
ramble. Hence men of wisdom should earnestly set about knowing the true nature
of the Self.
61. For one who
has been bitten by the serpent of Ignorance, the only remedy is the knowledge
of Brahman. Of what avail are the Vedas and (other) Scriptures, Mantras (sacred
formulae) and medicines to such a one?
62. A disease does
not leave off if one simply utter the name of the medicine, without taking it;
(similarly) without direct realisation one cannot be liberated by the mere
utterance of the word Brahman.
63. Without
causing the objective universe to vanish and without knowing the truth of the
Self, how is one to achieve Liberation by the mere utterance of the word
Brahman ? — It would result merely in an effort of speech.
So long as one is in the realm of
duality, one has to explain how or why one thing came from another; and
contradictory views are expressed. But when a Gnani shows there is no second,
there is no production, and the contradictions do not arise at all, when the
ultimate thing is consciousness alone. Thus consciousness is ultimate truth or
Brahman. 
The dualist’ arguments are based on
false self (ego or waking entity) and false experience (waking or dream or
universe)    to show the weakness of the
position of dualistic view point.  They
at their wits end to explain.
Self-Knowledge or Brahma Gnana or Atma Gnana  is
the aim of every human being. Since everyone thinks the physical body is the
self, their aim is misdirected and they focus their attention on materiality
which makes one feel the duality(waking) as reality.
In pursuit of
truth the ultimate truth has to be proved, not assumed.  The individual experience bliss is not Brahmic bliss. 
Individual
truth is not universal truth.  Individual cannot claim that he has
experienced the whole.  There is no proof he has seen it, because the
whole is not individual experience. The man and the world are within the
whole.  Thus such claims of experiencing the  formless soul, the innermost self  is mere
hallucination. 
Being a house holder and in
the midst of the worldly life one can dwell in the spiritual pursuit to acquire
the Self-Knowledge or Brahma Gnana or Atma Gnana. Whether man dwells at home or forest if he has the intense
urge and courage to accept the truth and reject the untruth is the chief
requisite for spiritual advancement. 
