effect are but two aspects of one manifestation of energy. He who fails to
see this, being engrossed in the visible only, goes from death to death;
because he clings to external forms which are perishable. Only the essence
which dwells within is unchangeable and imperishable. This knowledge of the
oneness of visible and invisible, however, cannot be acquired through
sense-perception. It can only be attained by the purified mind.


XII

The Purusha (Self), of the size of a thumb, resides in the middle
of the body as the lord of the past and the future, (he who knows
Him) fears no more. This verily is That.

The seat of the Purusha is said to be the heart, hence It
"resides in the middle of the body." Although It is limitless and
all-pervading, yet in relation to Its abiding-place It is
represented as limited in extension, "the size of a thumb." This
refers really to the heart, which in shape may be likened to a
thumb. s light is everywhere, yet we see it focused in a lamp
and believe it to be there only; similarly, although the
life-current flows everywhere in the body, the heart is regarded
as peculiarly its seat.


XIII

That Purusha, of the size of a thumb, is like a light without
smoke, lord of the past and the future. He is the same today and
tomorrow. This verily is That.