The passage 'Know him alone as the Self' moreover implies a declaration
of difference, viz. of the difference of the object of knowledge and the
knower. Here the individual soul as being that which is desirous of
release is the knower, and consequently Brahman, which is denoted by the
word 'self' and represented as the object of knowledge, is understood to
be the abode of heaven, earth, and so on.--For the following reason also
the individual soul cannot be accepted as the abode of heaven, earth,
&c.