In the very beginning of this chapter Kṛṣṇa said, evaṁ paramparā-prāptam imaṁ rājarṣayo viduḥ (BG 4.2). We haven't got to make any research, modern understanding. There is no question of modern understanding. We are all following the old, ancient understanding. Now, even from ordinary platform, the eating, sleeping, mating, and defending, is that modern? It is not modern. Formerly also, all living entities were eating, they were sleeping, they were having sex intercourse and they were defending. The main business is...
Nothing is modernized. You can say, "modernized," but the principle is the same, old system. Nobody can change. And people are dying also. Janma-mṛtyu-jarā-vyādhi (BG 13.9). That is also the old system. Everyone is taking birth, everyone is growing, everyone is falling diseased, and everyone is dying. Can the modern system stop this? The modern system can say, "Now you do not require to eat, you do not require to sleep," or "You do not require to have sex,"or "You do not require to defend?" No. The same system. "The old wine in a new bottle."