"I am very insignificant. I have no capacity. My business is only to convey the message of Kṛṣṇa. Just like a postal peon: his business is to convey the letter. He is not responsible for the body of the letters. After reading one letter the addressee may feel something, but that responsibility is not for the peon.
Similarly, my responsibility is, what I have received from disciplic succession, from my spiritual master, I am just presenting the same thing, but without any adulteration. That is my business. That is my responsibility. I must present things exactly in the same way as it was presented by Kṛṣṇa, as it was presented by Arjuna, as it was presented by our ācāryas, Lord Caitanya, and at last my spiritual master, Bhaktisiddhānta Sarasvatī Gosvāmī Mahārāja.
So similarly, if you take up the Kṛṣṇa consciousness movement in the same spirit, and if you distribute to other people, to your other countrymen, surely it will be effective. Because there is no adulteration. There is no bluff. There is no cheating. It is pure spiritual consciousness. Just practice it and distribute it. Your life will be glorious."
(Srila Prabhupada Lecture, Los Angeles, July 11, 1971)