Vrn Sept 25 1976
Now Kṛṣṇa advised Arjuna that “You release this saṁhārāstra,” how to counteract. Unnaddhamastra–jñaḥ. Unnaddham: “You know better than him how to counteract.” Hy astra–tejasā: “By another…” [break] …different astras[weapons]are released by different expert military men. So that science is not yet discovered. By mantra. Just like here it is said that he took water, āpaḥ. Spṛṣṭvāpas taṁ parikramya. Āpaḥ. Just like we take, oṁ apavitraḥ pavitro vā sarvāsvasthāṁ gato ‘pi vā. Similarly, mantra and water can be utilized for very, very important purpose. Simplymantra and water. So this is the science. This is called subtle science, not gross. They have discovered this atomic weapon—they require so many chemicals. But when you come to the higherstage, subtle, then mantra and water will do. Nothing more. No more chemicals. Simply mantra and water. That is yet you have to learn.
But these things are there in the Vedas. If you are a serious student of Veda you can also learn, you can also fight like Arjuna. There is no difficulty. Therefore Kṛṣṇa says astra–jñaḥ. Unnaddhamastra–jñaḥ. You can also become learned in the higher science of military art. You can also utilize. But that requires brain, good brain. That is not possible now, because the culture is lost. Now everyone is śūdra. Nobody is kṣatriya, nobody is brāhmaṇa. By the time… Kalau śūdra sambhava.The śūdras cannot learn all these veda. Because śūdras have no right to understand Vedic knowledge. It is meant for the brāhmaṇas, kṣatriyas. Even not for the vaiśyas. Striyo vaiśyās tathāśūdrāḥ. They are rejected, woman and vaiśya and śūdra. Kṛṣṇa says. Striyo vaiśyās tathā śūdrāḥ.But Kṛṣṇa says te ‘pi yānti parāṁ gatim: “Even woman, and śūdra and vaiśyas, low grade, they can also get parāṁ gatim, promotion to the transcendental world.” How? Māṁ hi pārtha vyapāśritya ye‘pi syuḥ pāpa–yonayaḥ [Bg. 9.32]. If you take to Kṛṣṇa consciousness, then even these low-grade born persons, beginning from striya śūdra vaiśya, and down, caṇḍālas… Caṇḍālas means less than the caṇḍāla. Kirāta-hūṇāndhra-pulinda–pulkaśāḥ. They are caṇḍālas. Kirāta means the black clan, or the Africans. So they are called kirāta. Hūṇāndhra-pulinda-pulkaśā ābhīra-śumbhā yavanāḥkhasādayaḥ [SB 2.4.18]. Yavanas, khasādaya, Mongolians, without any moustaches. Kirāta-hūṇāndhra-pulinda–pulkaśā ābhīra-śumbhā yavanāḥ khasādayaḥ ye ‘nye ca pāpāḥ. “Even there are still more low-grade, sinful society,” ye ‘nye ca pāpā yad-apāśrayāśrayāḥ, “if he takes the shelter of a pure devotee, śudhyanti, becomes purified.” Becomes purified. How?Śudhyanti? Because prabhaviṣṇave namaḥ. Lord Viṣṇu has got so exalted power that through His devotee He can purify anyone. 
