Prabhupāda: Question may be put by opposing party that simply by becoming Kṛṣṇa conscious how one can know God? What will be your answer? What will be your answer? Suppose an opposing party says that "All right, I accept that you are Kṛṣṇa conscious or God conscious, you have devoted your life for Kṛṣṇa.
So how do you find . . . how do you see Kṛṣṇa that you are working for Him?" What will be the answer? Are you following blindly, or you have experience of Kṛṣṇa? Yes. What will be the answer? It's a very intelligent question. People will ask you, perhaps they ask, "Have you seen Kṛṣṇa?" "Why you are Kṛṣṇa conscious?" What is your answer?
Devotee: You see Him through śāstra and the teachings of the spiritual master and His arcā-vigraha.
Prabhupāda: Of course that's nice, but then you are following blindly your spiritual master. What is your experience?
Devotee (2): Your heart becomes pure.
Prabhupāda: Hmm.
Devotee (3): First you can hear Kṛṣṇa before you see Him, and this is a purification process. And the purification process can be felt, and then you ask the person, "You can feel it yourself by chanting Hare Kṛṣṇa. Why not try it?"
Prabhupāda: That's all right. You have tried; whether you have seen? That is the question. You have tried for the last four or five years. Whether you have seen Kṛṣṇa?
Devotee (4): We cannot see Kṛṣṇa, because our eyes are impure . . .
Prabhupāda: Then you are following blindly.