Puṣṭa-kṛṣṇa: Vālmīki was a great poet, and similarly Vyāsadeva is a great writer, and both of them have absolutely engaged themselves in delineating the transcendental activities of the Lord and by doing so have become immortal. Similarly, science and philosophy also should be applied in the service of the Lord. There is no use presenting dry speculative theories for sense gratification. philosophy and science should be engaged to establish the glory of the Lord. Advanced people are eager to understand the Absolute Truth through the medium of science, and therefore a great scientist should endeavor to prove the existence of the Lord on a scientific basis. Similarly, philosophical speculations should be utilized to establish the Supreme Truth as sentient and all-powerful. Similarly, all other branches of knowledge should always be engaged in the service of the Lord. In the Bhagavad-gītā also the same is affirmed. All "knowledge" not engaged in the service of the Lord is but nescience. Real utilization of advanced knowledge is to establish the glories of the Lord, and that is the real import. Scientific knowledge engaged in the service of the Lord and all similar activities are all factually hari-kīrtana, or glorification of the Lord. Jaya, bliss. Hare Kṛṣṇa.
Prabhupāda: So? Do you agree or not? (laughter) We welcome scientific knowledge. We don't say that scientific knowledge should be stopped, but it should be utilized to glorify the Lord. Then it is perfect. Otherwise useless. Means you don't get perfection. Perfection is when you scientifically describe the existence of God and His different energies, how they are working. And that is scientist, real scientist. Otherwise, theories, you can give your theory, I'll give you a theory... Temporary. That's all. So everything is there in Bhāgavatam, all knowledge, full knowledge. Vidvān bhāgavata-vādī. So vidvān means, vidvān means one who has learned Bhāgavata, Bhāgavatam nicely. He's vidvān, factually. So you do not read all these things?