This chanting process—Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare—it is simple. Even a child can chant. We have got experience. When we hold meeting, unless one is very obstinate, he joins and chants Hare Kṛṣṇa mantra, and dances also with ecstasy. He doesn't require to understand what is Hare Kṛṣṇa mantra, but because it is spiritual vibration, it appeals to the spirit soul, and immediately he become ecstatic. That is the process.
So by chanting Hare Kṛṣṇa mantra, your heart, the mirror of your heart, becomes cleansed so that you can see. Just like mirror, when it is dusty, you cannot see your face nicely, similarly, when our heart is contaminated with the material infection, we cannot understand our real position. But if we chant this Hare Kṛṣṇa mantra, then it will be possible to understand, to see our constitutional position. Ceto-darpaṇa-mārjanam (CC Antya 20.12).
And bhava-mahā-dāvāgni-nirvāpaṇam. If you chant this Hare Kṛṣṇa mantra, there is no expenditure and there is no loss. Just like we requested you while our students were chanting to join with. What was the loss? But if you do not do, then how we can help you? We are not asking you to pay something for chanting this mantra. It is free. It is open. You have to simply chant Hare Kṛṣṇa, Hare Kṛṣṇa and see the result. Why don't you do that? We are not asking any payment. You are not losing anything. Why don't you make this experiment?