In the previous verse, yaṁ hi na vyathayanty ete puruṣaṁ puruṣarṣabha (BG 2.15), Kṛṣṇa says: "Those who are not disturbed by the material changes . . ." Sama-duḥkha-sukhaṁ dhīraṁ so mṛtatvāya kalpate. Our mission, human mission, is to come to the platform of amṛtatvam, immortality. We have discussed this point. Amṛtatvam, immortality. The modern civilization, the so-called scientists, philosophers, they cannot imagine even that there is possibility of becoming immortal. They cannot imagine. Their brain is so dull that they cannot think of, that we can become immortal. Then how Kṛṣṇa is speaking about immortality?
Is He speaking something nonsense, utopian? No. He is speaking the fact. Otherwise, if Kṛṣṇa speaks something nonsense, utopian, then nobody would be interested to read Bhagavad-gītā. We may be third-class men, that we indulge in Bhagavad-gītā, and Kṛṣṇa is speaking something utopian, nonsense, but there are big, big ācāryas—Rāmānujācārya, Madhvācārya. Why they are giving attention to the reading of Bhagavad-gītā? Kṛṣṇa does not speak anything nonsense. It is fact. So if it is the fact that there is possibility of becoming immortal . . . that is sat.