XVII
The Purusha, the inner Self, of the size of a thumb, is ever seated in the heart of all living beings. With perseverance man should draw Him out from his body as one draws the inner stalk from a blade of grass. One should know Him as pure and deathless, as pure and deathless.
As has been explained in Part Fourth, verse XII, the inner Self, although unlimited, is described as "the size of a thumb" because of its abiding-place in the heart, often likened to a lotus-bud which is similar to a thumb in size and shape. Through the process of steadfast discrimination, one should learn to differentiate the Soul from the body, just as one separates the pith from a reed.
XVIII
Thus Nachiketas, having acquired this wisdom taught by the Ruler of Death, together with all the rules of Yoga, became free from impurity and death and attained Brahman (the Supreme). So also will it be with another who likewise knows the nature of the Self.
PEACE CHANT
May He (the Supreme Being) protect us both. May He be pleased with us. May we acquire strength. May our study bring us illumination. May there be no enmity among us.
OM! PEACE! PEACE! PEACE!
Here ends this Upanishad
Kena-Upanishad