"The soul is there, but you cannot see by material instrument. It is very fine. It is one ten-thousandth part of the tip of your hair. These are explained in the Vedic literature. So how you can find with your material eyes? You cannot see it. And because you cannot see it, you are concluding there is no soul. That is the ignorance.
There is... There is soul, and this body has developed on the platform of that soul, and that soul is migrating from one body to another. That is called evolution. And that evolutional process is going on, 8,400,000's of species of life—aquatics, birds, beasts, plants and so many species of life. And we have got now this developed consciousness, human form of life.
We should properly utilize it. That is our Kṛṣṇa consciousness movement. We are simply educating people, 'Don't waste your valuable life, the human form of life. If you are missing this chance, you are committing suicide.' That is our propaganda. Don't commit suicide. Take to this Kṛṣṇa consciousness.
And the process is very simple. You haven't got to take difficult processes like yoga system or philosophical, speculative system. That is not possible in this age. That is... I am not speaking from my own experience, but I am taking the experience of big ācāryas and big stalwart sages. They say that kalau nāsty eva nāsty eva nāsty eva gatir anyathā.
If you want to realize yourself, if you want to know what is your next life, if you want to know what is God, if you want to know what is your relationship with God, all these things will be revealed to you—this is real knowledge—by simply chanting this mantra, Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare.
It is practical. We are not charging anything. We are not bluffing you that 'I shall give you some something, secret mantra, and charge you fifty dollars.' No. It is open for everyone. Please take it. That is our request. We are begging you, 'Don't spoil your life. Please take this mantra. Chant wherever you like.'
It has no hard-and-fast rules you have to follow. Whenever you like, wherever you like, any condition of life... Just like we chanted half an hour before. Any condition, you felt ecstasy.
Similarly, you can continue this. Chant this Hare Kṛṣṇa mantra. It is given to you free. But if you want to know what is this Hare Kṛṣṇa mantra through philosophy, through knowledge, through logic, we have got volumes of books. Don't think that we are simply sentimentally dancing. No, we have got background.
So try to understand this Kṛṣṇa consciousness movement. I have especially come to your country to deliver you this good message, because if you accept this, if you can understand this science of Kṛṣṇa consciousness, other part of the world will also follow, and the face of the world will be changed. That is a fact."
(Srila Prabhupada Lecture, Ohio State University, May 12, 1969)