Dr. Patel: They should not talk anything else except Kṛṣṇa.
Prabhupāda: Yes. Vacaṁsi vaikuṇṭha-guṇānuvarṇane. So this is sam... Unless you give engagement to the senses, proper, how you can control it? Your eyes want to see beautiful of man or woman. (aside:) Hare Kṛṣṇa. But when you are captivated by seeing the Deity of Kṛṣṇa and Rādhā, then that eyes being engaged otherwise is stopped. That has been explained by Prabodānanda Sarasvatī. Durdantendriya-kāla-sarpa-paṭalī-protkhāta-daṁstrāyate. Protkhāta-damstrāyate. Protkhāta means extracted, the poison teeth. The poison teeth of the tea, uh, teeth of the snake is dangerous. Now, here is a snake. Everyone is afraid, "Oh, snake! Snake! Snake!" But if everyone knows that his poison teeth have been taken away, then there is no more danger. Similarly, these indriyas have been compared with the kāla-sarpa-paṭalī. Kāla-sarpa-paṭalī. But...
Dr. Patel: What do you call?
Prabhupāda: Kāla, kāla-sarpa means the dead(ly) poisonous snake, kāla-sarpa-paṭalī. Everyone knows. As soon as you use some indriya, there is some dangerous result.