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."
Similarly, janma-mṛtyu-jarā-vyādhi, five thousand years before, Kṛṣṇa said... This is real problem: janma-mṛtyu-jarā-vyādhi-duḥkha-doṣānudarśanam. "The same problem is still going on. So it is useless to say that modern time, modern ways, modern things. There is nothing modern. The old thing is going on. So if we follow systematically the previous ācāryas, previous system, as Kṛṣṇa is advising... Kṛṣṇa does not advise, "Modern." Five thousand years ago He instructed Bhagavad-gītā. Still, He was saying pūrva pūrvataraiḥ, pūrvatamaiḥ. Evaṁ paramparā-prāptam imaṁ rājarṣayo viduḥ [Bg. 4.2]. This is intelligence. We have to accept the real truth and follow it. It does not mean modern age or previous age, past age. That is not Vedic system.
Bhagavad-gītā 4.15 -- Bombay, April 4, 1974