O Gautama (Nachiketas), as pure water poured into pure water becomes one, so also is it with the Self of an illumined Knower (he becomes one with the Supreme).
Part Fifth
I
The city of the Unborn, whose knowledge is unchanging, has eleven gates. Thinking on Him, man grieves no more; and being freed (from ignorance), he attains liberation. This verily is That.
This human body is called a city with eleven gates, where the eternal unborn Spirit dwells. These gates are the two eyes, two ears, two nostrils, the mouth, the navel, the two lower apertures, and the imperceptible opening at the top of the head. The Self or Atman holds the position of ruler in this city; and being above the modifications of birth, death and all human imperfections, It is not affected by the changes of the physical organism. As the intelligent man through constant thought and meditation realizes the splendour of this Supreme Spirit, he becomes free from that part of his nature which grieves and suffers, and thus he attains liberation.
II
He is the sun dwelling in the bright heaven; He is the air dwelling in space; He is the fire burning on the altar; He is the guest dwelling in the house. He dwells in man. He dwells in those greater than man. He dwells in sacrifice. He dwells in the ether. He is (all that is) born in water, (all that) is born in earth, (all that) is born in sacrifice, (all that) is born on mountains. He is the True and the Great.
III
He it is who sends the (in-coming) Prana (life-breath) upward and throws the (out-going) breath downward. Him all the senses worship, the adorable Atman, seated in the centre (the heart).