(Click to enlarge photo of devotees on sankirtana, Back to Godhead magazine, Vol. 36, 1970)
"So our Kṛṣṇa consciousness movement means to preach the teachings of Bhagavad-gītā as it is, not to interpret it in a nonsensical way and mislead the people. We don't try to mislead the people. We give without any changes and without any cost, without any loss on your part.
But give a try, this Kṛṣṇa consciousness movement, simple thing, just chant Hare Kṛṣṇa, these sixteen words: Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare.
You practice it, you chant anywhere you like, either in your home or anywhere. There is no restriction, there is no hard and fast rules and regulation for chanting, and anyone can chant. You see all our..., you also chanted just a few minutes ago. You chanted.
So it is not difficult. Give it a try. That is our request. We request you, most humbly, that you take these sixteen words, you chant, and your heart will be cleansed of all dirty things. Ceto-darpaṇa-mārjanam. Every dirty things. Our..., we do not know how long we are changing births—900,000 species of birth in the water, and 2,000,000 species of life as plants and leaves and trees, and so many lives as reptiles, and cats and dogs and so many...
Now we have come to this, by evolutionary process, this civilized form of life, human form of life, very beautiful form of life. Why you should waste this life, again go to that cycle of changing birth after birth, janma-mṛtyu-jarā-vyādhi-duḥkha-doṣānudarśanam (BG 13.9)?
The intelligent man should understand, try to understand, how much miserable it is to undergo birth and death and disease and old age. Don't be carried away by whims. You are intelligent boys and girls, born in rich family and rich nation.
Just try to utilize; then it will be finishing touch to your country. Your country is advanced in so many ways. You have no poverty. You are advanced in so many ways. Take this Kṛṣṇa consciousness movement. Your country will be perfect, actual leader of the whole world.
I have come to your country with this purpose, that if American boys and girls should accept this Kṛṣṇa consciousness movement, it will be good for them and good for the world. So try to understand this Kṛṣṇa consciousness movement. It is very easy—it is not difficult—but it is sublime. It is the most sublime movement. It can solve all the problems of the world. That we are sure."
(Srila Prabhupada Lecture, Columbus, May 19, 1969)