It is no use going roundabout way, trace the Brahman which is the formless substance and witness of the universe, which is in the form of mind

 

 It is the illusion that allures one to enjoy the mundane objects in a futile effort of satisfying the unceasing demands of his senses within the waking or dream. A person within the illusion becomes intoxicated of lust, greed, anger, attachment, false ego, enviousness, stubborn mindedness, and their numerous variations within the illusion.

 Consequently, the individual self gets caught in the illusory cycle of birth, old age, disease, and death within the illusion. This is illusion, by which the consciousness is forgotten; emotional attachment and love of duality is born. 

The ignorance of the true self is cause of duality. The duality is cause of illusion. The illusion is the cause of experiencing unreality as reality. 

 Because of this pluralistic phenomena of illusory -vision, the material happiness appears to be followed by sorrow. If there is laughter, there is a cry; if there is a birth, there is a death; if there is a rich, there is a poor; so on and so forth.

Everything in the waking or dream experience is in the state of constant flux; there can be found no everlasting happiness. The ego is in the control of evil passions, evil intent, and duality.

Everyone wishes for happiness, pleasures, joy, peace, etc. and none asks for suffering, misery, etc. But in the wake of pleasure, there comes suffering. The pleasure and pain co-exists within the illusion.  People do not understand this.  Therefore, there is necessary to realize the fact that mind, which appears as waking or dream is mere illusion. 

The individual self is not real, is not accepted by many.  The non-dual wisdom is based not on the individual self [ego].  Until people hold the waking entity or ego as witness, they will not reach the ultimate understanding.  

When Upanishad itself declares:-   sarvam khalvidam brahma - all this (universe) is verily Brahman. By following back all of the relative appearances in the world, we eventually return to that from which it is all manifest – the non-dual reality (Chandogya Upanishad).  

Then It is no use going roundabout way, trace the Brahman which is the formless substance and witness of the universe, which is in the form of mind.  By tracing the source of the mind or universe one will be able to realize the Brahman.