and the senses from all unworthy objects and their due concentration (upon worthy objects) is the highest penance.  That is the foremost of all duties.  Indeed, that is said to be the highest duty.  Directing, by the aid of the understanding, the senses having the mind for their sixth, and without, indeed, thinking of worldly objects which have the virtue of inspiring innumerable kinds of thought, one should live contented with one’s own self.  When the senses and the mind, withdrawn from the pastures among which they usually run loose, come back for residing in their proper abode, it is then that thou wilt behold in thy own self the Eternal and Supreme Soul.[1064] Those high-souled Brahmanas that are possessed of wisdom succeed in beholding that Supreme and Universal Soul which is like unto a blazing fire in effulgence.  As a large tree endued with numerous branches and possessed of many flowers and fruits does not know in which part it has flowers and in which it has fruits, after the same manner the Soul as modified by birth and other attributes, does not know whence it has come and whither it is to go.  There is, however, an inner Soul, which beholds (knows) everything.[1065] One sees the Soul oneself with the aid of the lighted lamp of knowledge.  Beholding, therefore, thyself with thy own self, cease to regard thy body as thyself and attain thou to omniscience.  Cleansed of all sins, like unto a snake that has cast off its slough, one attains to high intelligence here and becomes free from every anxiety and the obligation of acquiring a new body (in a subsequent birth).  Its current spreading in diverse directions, frightful is this river of life bearing the world onward in its course.  The five senses are its crocodiles.  The mind and its purposes are the shores.  Cupidity and stupefaction of judgment are the grass and straw that float on it, covering its bosom.  Lust and wrath are the fierce reptiles that live in it.  Truth forms the tirtha by its miry banks.  Falsehood forms its surges, anger its mire.  Taking its rise from the Unmanifest, rapid is its current, and incapable of being crossed by persons of uncleansed souls.  Do thou, with the aid of the understanding cross that river having desires for its alligators.  The world and its concerns constitute the ocean towards which that river runs.  Genus and species constitute its unfathomable depth that none can understand.  One’s birth, O child, is the source from which that stream takes its rise.  Speech constitutes its eddies.  Difficult to cross, only men of learning and wisdom and understanding succeed in crossing it.  Crossing it, thou wilt succeed in freeing thyself from every attachment, acquiring a tranquil heart, knowing the Soul, and becoming pure in every respect.  Relying them on a purged and elevated understanding, thou wilt succeed in becoming Brahma’s self.  Having dissociated thyself from every worldly attachment, having acquired a purified Soul and transcending every kind of sin, look thou upon the world like a person