तृष्णार्तिप्रभवं दुःखं दुःखार्तिप्रभवं सुखम् ।
सुखात्सञ्जायते दुःखमेवमेतत्पुनः पुनः ॥
tṛṣṇārti-prabhavaṁ duḥkhaṁ duḥkhārti-prabhavaṁ sukham |
sukhāt sañjāyate duḥkham evam etat punaḥ punaḥ ||
(Mahābhārata: 12.168.18)
“Suffering is that the cause of which is the distress of the desire, and happiness is that the cause of which is the distress of suffering. Suffering is produced from happiness. Thus, this occurs again and again.”