'For where there is duality, one smells another, one sees another, one hears another, one speaks to another, one thinks of another, one knows another. But where everything in one has become self,how can one smell-and whom? How can one see-and whom? How can one hear-and whom? How can one speak and to whom? How one think-and of whom? How can one know that by which one knows all this? How can one know the knower?