You cannot deviate from the Vedic injunction that if you have to follow the ācāryas, just like India is obeying. The mass population or the sane population, they are following the ācāryas.
Reporter: Would Darwin's theory of evolution and other evolutionary theories...
Prabhupāda: Whatever it may be. If it is being changed every year or every ten years, then what is the value of this opinion? There is no value.
Reporter: Well, but religious thought in India has changed over the years too.
Prabhupāda: No. Nothing. We do not change. Just like your Bhagav...
Reporter: Well, others ...
Prabhupāda: Bhagav...
Reporter: Others change.
Prabhupāda: Ah, others may deviate, that's another thing. But the system is not that. You cannot deviate from the Vedic injunction that if you have to follow the ācāryas, just like India is obeying. The mass population or the sane population, they are following the ācāryas. Ācāryas means great teachers, bona fide teachers—perhaps you have heard their name, just like Rāmānujācārya, Madhvācārya, Nimbārka, Viṣṇu Svāmī, Lord Caitanya. So they are followed, and they are of the same opinion. Millions of years ago, what was the opinion, and that opinion is still there. Ācchā, take for Bhagavad-gītā. And that is.... Not a single Indian who does not accept Bhagavad-gītā as authority. This is besides the foreigners who also take interest so much in Bhagavad-gītā. So far Indians are concerned, even some of the Muhammadans, so apart from Muhammadans, those who are claiming as Hindu, they all accept the authority of Bhagavad-gītā. So this Bhagavad-gītā, they might have changed, but that is not acceptable.