"The booklet Nan Yar? elaborates on the "I" and Self-enquiry:"

“What is called mind is a wondrous power existing in Self. It projects all thoughts. If we set aside all thoughts and see, there will be no such thing as mind remaining separate; therefore, thought itself is the form of the mind. Other than thoughts, there is no such thing as the mind.”

“I want you to dive consciously into the Self, i.e., into the Heart.”

“Ishta-devata and Guru are aids - very powerful aids on this path. But an aid to be effective requires your effort also. Your effort is a sine qua non. It is you who should see the sun. Can spectacles and the sun see for you? You yourself have to see your true nature. Not much aid is required for doing it!”

“The radiance of consciousness-bliss, in the form of one awareness shining equally within and without, is the supreme and blissful primal reality. Its form is silence and it is declared by jnanis to be the final and unobstructable state of true knowledge .”

“The Self itself is God.”

“Know Thyself. All else will be known to thee of its own accord. Discriminate between the undying, unchanging, all-pervading, infinite Atma and the ever-changing, phenomenal and perishable universe and body. Enquire, "Who am I?" Make the mind calm. Free yourself from all thoughts other than the simple thought of the Self or Atma. Dive deep into the chambers of your heart. Find out the real, infinite "I". Rest there peacefully for ever and become identical with the Supreme Self.”