Verse 21

²¹As a goldsmith who knows the work gets gold out of the stones of the field by his methods, so one who knows the self, by the methods of the self, gets from the fields that are bodies the going to Brahman. ²²The teachers have said that the natures are eight, that the strands belonging to them are three, and the changes sixteen; and that the Person is one, since all of them come together in him. ²³The body is the whole mass of these, and it is of two kinds, what moves and what stands still. Just here the Person is to be searched for, letting go what is not he with the words: not this, not this. ²⁴by what goes with him and what does not, by a discernment made clear and eager, by men who weigh without hurry, and with the traditions that tell of the stations of heaven.

²⁵Waking, dream and deep sleep are movements of the understanding. He by whom alone they are undergone is the one who oversees them, the Person, the highest. ²⁶By these changes of understanding, three-coloured, thrown up and thrown down, that rise out of action, a man should come to know the self's own form, as he knows wind from the scents that travel with it. ²⁷This is the door by which the round of birth comes, tied to the strands and to works. Its root is ignorance, and it means nothing; still it is laid upon a man like a dream.