(Srila Prabhupada in the San Francisco temple, 1967)
"Fortunately you have come to this platform of Kṛṣṇa consciousness. Don't misuse it. That is my request. Narottama dāsa Ṭhākura has sung, hari hari biphale janama goṅāinu: 'My Lord Kṛṣṇa, I have simply wasted my time.' Why? Now, manuṣya-janama pāiyā, rādhā-kṛṣṇa nā bhajiyā, jāniyā śuniyā biṣa khāinu: 'I got this human form of life. It is meant for understanding Kṛṣṇa and Kṛṣṇa's pastimes with Rādhārāṇī, Rādhā-Kṛṣṇa. So I did not care for that. That means knowingly I have drunk poison.'
So my only request is that Kṛṣṇa consciousness movement is the most scientific movement to save the human society from falling down again in the cycle of birth and death. It is very scientific movement. The cycle of birth and death is going on. We are eternal. The people have been put into so deep darkness, they do not know what is going on, what is the aim of life. They do not know. Na te viduḥ. They do not know. Whimsically everyone is manufacturing something, nonsense. Jāniyā śuniyā biṣa khāinu. What Kṛṣṇa says, we have to accept that. Then we are safe. Otherwise we are lost again.
So fortunately you have got this Kṛṣṇa consciousness, so utilize your life properly. You have got immense literature. Read it. Digest it. Make your life perfect. That is my request. Don't spoil it. At least you have come to the shore of Kṛṣṇa consciousness. Ei rūpe brahmāṇḍa bhramite kono bhāgyavān jīva. It is great fortune, bhāgyavan jīva. Unless one is very fortunate, he cannot come to the shelter of Kṛṣṇa consciousness. That's a fact. So don't misuse it. That is my request."
(Srila Prabhupada Lecture, New Zealand, April 27, 1976)