The seeker has dive deeper and deeper in order to unfold the mystery of the 'I'.+

Sage Sankara says: ~ “What is accepted without a proper inquiry will not lead to the final Goal”. (Commentary on Vedanta Sutra)

Nothing has to be accepted as truth without verification.

‘WHO AM ‘I’? and ‘I AM THAT are only stages. They are helpful at the beginning of the pursuit of truth. As the seeker advances in his quest for truth, he finds them inadequate and useless.

The inner journey will not end with ‘WHO AM ‘I’? and ‘I AM THAT the journey is incomplete. It is WHO AM ‘I’? and ‘I AM THAT teaching are final because they are only based on the form and they omit the time and space.

The journey will be completed only when we discover the truth of the whole that is the form, time, and space together. 

Thus, sticking to WHO AM ‘I’? and ‘I AM THAT teaching as final and stopping the journey is a foolish venture. If you are a serious seeker of truth and you want to realize the truth of your true existence then you must be ready to drop what is not needed in pursuit of truth. Nothing has to be accepted without deeper verification.

If the ‘I’ be true, let it then be perceived in the state of deep sleep also. As it is not at all perceived, it must be unreal and false like dreams.

All the teachings are useless so long as the highest truth is unknown, and it is equally useless when the highest Truth has already been known.

The seeker has to dive deeper and deeper to unfold the mystery of the 'I'.

The basic purpose of seeking the truth is to discover the truth of our true existence. The truth of our true existence will be revealed only by discovering the source of physical existence. Physical existence means the universe.

First, analyze the universe. How this universe came into existence. And what this universe is supposed to be in truth.

As you go deeper and deeper analyzing you will discover that the universe is dependent on the ‘I’. Without the ‘I’ the universe ceases to exist.

The ‘I’ is the main ingredient to investigate.

As you go deeper you will find: ~

The ‘I’ appears along with the universe.

The ‘I’ disappears along with the universe.

As you go still deeper you will find.

The ‘I’ is there only when the mind is there.

The ‘I’ appears along with the mind.

The ‘I’ disappears along with the mind.

As you go deeper you will find: ~

The mind appears along with the universe.

The mind disappears along with the universe.

As you go deeper you will find: ~

The universe appears along with the waking experience.  

The universe disappears along with the waking experience.

As you go deeper you will find: ~

The dream universe appears along with the dream.

The dream universe disappears along with the dream.

The dream is a parallel waking experience.

The waking experience is a parallel dream.

As you go deeper you will find: ~

‘I’ disappears in deep sleep.

Along with the ‘I', the mind disappears.

Along with ‘I', the universe disappears.

Along with ‘I', the waking disappears.

Along with the ‘I’ dream disappears.

So

‘I’ is one behind the mind.

The ‘I’ is the one behind the universe.

The ‘I’ is the one behind the waking.

The ‘I’ is the one behind the dream.

So,

Where this ‘I’ disappeared in deep sleep.

As you go deeper you will find: ~

The duality is present only when ‘I’ is present.

The duality is present only when the mind is present.

The duality is present only when the universe is present.

The duality is present only when the waking is present.

The duality is present only when the dream is present.

But

The duality is absent in deep sleep.

The ‘I’ is absent in deep sleep.

The mind is absent in deep sleep.

The universe is absent in deep sleep.

The waking is absent in deep sleep.

The dream is absent in deep sleep.

So,

In deep sleep, there is only non-duality.

So, you have to find out: What is it that appears as duality, and what is it that disappears nonduality?

~ It is the Soul, which is present in the form of consciousness is the cause of the ‘I’ and it, itself is uncaused. : ~Santthosh Kumaar