तदेव प्रीतये भूत्वा पुनर्दुःखाय जायते ।। तत्स्याद्दुःखात्मकं नास्ति न च किंचित्सुखात्मकम् ।। ३७।।
That at the outset is conducive to happiness but later brings in misery. Hence ultimately everything is of the nature of misery. There is nothing in fact of an invariably pleasurable nature.
Happiness and misery constitute only a temporary transformation of the mind. But knowledge is the greatest Brahman. Knowledge is conducive to the understanding of reality.
The entire universe consisting of the mobile and immobile beings has knowledge as its soul. O sage, there is nothing greater than the perfect knowledge of the greatest being.