Our Kṛṣṇa consciousness movement is just according to the direction of authoritative Vedic literature, and we are distributing this knowledge without any charge. We don't say there is any secrecy. It is wide open. Open secret. Anyone can take up these sixteen names and chant. And test it, chanting, say, for a week, and see the result. See the result, how you are spiritually realizing your self. Ceto-darpaṇa-mārjanam (CC Antya 20.12, Śikṣāṣṭaka 1).
If you go on chanting this Hare Kṛṣṇa mantra, the first installment of your gain will be that you will understand that you are not this body, you are spirit soul, which takes at least many years to understand that, "I am not this body." Everybody . . . you ask anybody, "What you are?" He will say: "I am this, sir, this and that." "I am American," "I am this body," "I am that body." But nobody knows that he is not this body. But if you chant this Hare Kṛṣṇa mantra, the first installment of your gain will be that you will realize yourself, ahaṁ brahmāsmi: "I am not this body, but I am spirit soul. I am part and parcel of the Supreme Lord."
And as soon as you come to this platform of understanding, then the next stage will be you will be jolly. Brahma-bhūtaḥ prasannātmā na śocati na kāṅkṣati (BG 18.54). Brahma-bhūta means self-realization, when one understands that "I am not this body." Due to this body, all sufferings are there. That we do not understand. We simply go to the physician. Although we know the body is the temple of all kinds of diseases, but we do not know how to get out of this material body. But there is possibility.