Yoko Ono: If Hare Kṛṣṇa is such a strong, powerful mantra, is there any reason to chant anything else? For instance, you talked about songs and many different mantras. Is there any point in chanting other songs or mantra?
Prabhupāda: No, no. These mantras are also... But Hare Kṛṣṇa mantra is specially recommended for this age. And the Vedic mantras, they are also chanted, I told you, with musical, tampura, and they sit down and chant. Nārada Muni, he's chanting always. So chanting through musical instruments, mantras, it is not new introduction. It is from time immemorial. And Hare Kṛṣṇa mantra, especially in this age, that is recommended in many Vedic literature, Brahmanda Purāṇa, Kali-santaraṇa Upaniṣad, Agni Purāṇa, like that. And apart from the statement in the Vedic literature, Lord Caitanya Himself, He preached this mantra. Hare Kṛṣṇa Hare Kṛṣṇa Kṛṣṇa Kṛṣṇa... And people, public, followed Him. Yes. (break) So anything... Just like a scientist. When he discovers something, it becomes a public property. People may take advantage of it. Similarly, if mantra has got potency, all people should take advantage of it. Why it should be secret?