Although this Atman dwells in the heart of every living being, yet It is not perceived by ordinary mortals because of Its subtlety. It cannot be perceived by the senses; a finer spiritual sight is required. The heart must be pure and freed from every unworthy selfish desire; the thought must be indrawn from all external objects; mind and body must be under control; when the whole being thus becomes calm and serene, then it is possible to perceive that effulgent Atman. It is subtler than the subtle, because It is the invisible essence of every thing; and It is greater than the great because It is the boundless, sustaining power of the whole universe; that upon which all existence rests.
XXI
Though sitting, It travels far; though lying, It goes everywhere. Who else save me is fit to know that God, who is (both) joyful and joyless?
The Self is all-pervading, hence It is that which sits still and that which travels, that which is active and that which is inactive. It is both stationary and moving, and It is the basis of all forms of existence; therefore whatever exists in the universe, whether joy or joylessness, pleasure or pain, must spring from It. Who is better able to know God than I myself, since He resides in my heart and is the very essence of my being? Such should be the attitude of one who is seeking.
XXII
The wise who know the Self, bodiless, seated within perishable bodies, great and all- pervading, grieve not.
Then a wise man through the practice of discrimination has seen clearly the distinction between body and Soul, he knows that his true Self is not the body, though It dwells in the body. Thus realizing the indestructible, all-pervading nature of his real Self, he surmounts all fear of death or loss, and is not moved even by the greatest sorrow.
XXIII
This Self cannot be attained by study of the Scriptures, nor by intellectual perception, nor by frequent hearing (of It); He whom the Self chooses, by him alone is It attained. To him the Self reveals Its true nature.
We may imagine that by much study we can find out God; but merely hearing about a thing and gaining an intellectual comprehension of it does not mean attaining true knowledge of it. Knowledge only comes through direct perception, and direct perception of God is possible for those alone who are pure in heart and spiritually awakened. Although He is alike to all beings and His mercy is on all, yet the impure and worldy-minded do not get the blessing, because they do not know how to open their hearts to it. He who longs for God, him the Lord chooses; because to him alone can He reveal His true nature.