In plain words
One is oneself, abiding as oneself, and asks of oneself, 'Who am I? What is the place where I abide?' Call such a one the equal of the drunkard who says, 'Who am I? Where am I?'
Word for word
Being oneself, as oneself, of oneself saying 'Who am I? Which is the place where I abide?': call that one the equal of the drinker of liquor who said 'Who am I? Where am I?'