Three Gunas

Vedic Science and the three Gunas

"The Brahman, which the Vedanta declares can be spoken of as only 'Not-this, not-this'
is I-Myself; My reality is the Brahmam in the cavity of my heart;
I am that Brahmam which Sadhakas (spiritual aspirants) strive to know and succeed in reaching.
Brahmam is that which remains after subtracting the body, the mind, the vital airs, the brain etc."

This knowledge is reached by the discipline of negation.
Just as by this method of elimination, you arrive at the conclusion,
"That tvam asi" "That thou art" is established.
When the veil hiding the self is removed, the soul is revealed as Paramatma or Parabrahmam. 
The Jivatma (individual soul) is of the essence of Paramatma (universal soul).

"I" refers to this Reality, the Sath-Chith-Ananda: it is only ignorance that can use it to indicate the body!
This ignorance and this wrong identification are the causes of continuous chapters of grief and joy.
So, use the word "I" with discrimination to mean only your Brahmic reality; that will win Atmajnana (knowledge of atman) for you.
Baba in the BRAHMANUBHAVA UPANISHAD


The Three Gunas

The three gunas represent the three aspects of human nature.

Rajoguna is the attachment that brings about desires and creates eagerness to enjoy the objective world that is "seen"; it breeds desire for physical heavenly pleasure.

Tamoguna cannot grasp the reality; so it misunderstands easily and takes the false to be the true. It lands persons into negligence and error. It binds, instead of releasing.

Sattvaguna controls the cause of grief and sorrow; encourages people to follow the path of real joy and happiness. Therefore, being single-pointed and unaffected by either of these three is the basis for purity and steadfastness.
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Sathya Sai Baba, Gîtâ Vahini, p. 193.