Atman is Brahman. Brahman is alone real; this waking is unreal, and the three states are non-different from Brahman.+

In Advaita Vedanta: ~ “Brahman is without attributes and strictly impersonal. It can be best described as infinite Being, infinite Consciousness, and infinite Bliss. It is pure knowledge itself, similar to a source of infinite radiance. Since the Advaitins regard Brahman to be the Ultimate Truth, so in comparison to Brahman, every other thing, including the material world, its distinctness, the individuality of the living creatures and even Ishvara (the Supreme Lord) itself are all untrue. Brahman is the effulgent cause of everything that exists and can possibly exist. Since it is beyond human comprehension, it is without any attributes, for assigning attributes to it would be distorting the true nature of Brahman. Advaitins believe in the existence of both Saguna Brahman and Nirguna Brahman; however, they consider Nirguna Brahman to be the absolute supreme truth.

Chandogya Upanishad:~ One who meditates upon and realizes the 'Self' discovers that everything in the cosmos-- energy and space, fire and water, name and form, birth and death, mind and will, word and deed, mantras and meditation--all come from the Self.

So, it clearly says the one who meditates upon the Self (consciousness) discovers that everything in the cosmos-- energy and space, fire and water, name and form, birth and death, mind and will, word and deed, mantras and meditation--all come from the Self. Therefore, there is a need to know that, the true Self is not physical, but the Soul to realize the fact that : the cosmos-- energy and space, fire and water, name and form, birth and death, mind and will, word and deed, mantras and meditation--all come from the Self, which is in the form of consciousness.

Atman is Brahman. Brahman is alone real; this waking is unreal, and the three states are non-different from Brahman.

Whatever is, is Brahman. Brahman itself is absolutely homogeneous. All difference and plurality are illusory." Brahman is not a person, as the Absolute is not this. But if one wants to call it God or ParamAtman, then fine. But it is not a person. Personifying it can make it difficult to understand the truth, which is beyond the form, time and space. : ~ Santthosh Kumaar