So far, of course, I know that this nuclear weapon was already discovered by the German people, and Hitler, it is said that he did not use it. Because he knew it that "If I throw this nuclear weapon there will be devastation." So from this point it can be considered that he had some human consideration. So he's advertised very adversely, but if it is a true fact, then how he could have this human consideration that he did not throw the nuclear weapon? And this was taken by the Americans and it was thrown in Japan. That is the history so far we know. So anyway, as we have got experience, the nuclear weapon is very, very dangerous. Similarly, the brahmāstra is also very, very dangerous. And another weapon, they knew this art, śabda-bhedhī. Śabda-bhedhī means "If I throw some arrow, it will go to my enemy wherever he is. A little sound of the enemy will attract this weapon, and it is sure to kill my enemy." Śabda-bhedhī. There are many instances in Rāmāyaṇa, Mahābhārata. Śabda-bhedhī-bān.
So such warfare of mantra, very subtle. This, at the present moment this warfare is carried on gross weapons. But finer than that, there is mantra war. By mantras the warfare can go on. So this warfare is mantra. That is . . . Just like indriyāṇi parāṇy āhur indriyebhyaḥ paraṁ manaḥ (BG 3.42). It is said in the Bhagavad-gītā that the indriyāṇi, so far our body is concerned, the indriyas, the senses are prominent. But more important than the senses, above the senses, is the mind. Indriyāṇi parāṇy āhur indriyebhyaḥ paraṁ manaḥ (BG 3.42). So as we have discovered so many weapons . . . That is gross, to be handled by senses. Even this nuclear weapon, it is handled by the scientists. But it is not by mantra. That science is still to be discovered by the modern scientists, how to . . . Or just like this mantra. Snake-charming mantra still there are.