Devotee (1): In which way one can engage oneself to the best service of Kṛṣṇa, or best use one's time for Kṛṣṇa?
Prabhupāda: Therefore you have to be guided by your spiritual master. Otherwise how can you know? It is not possible. Any school you go, you have to be guided by the school teacher. Otherwise you don't have any education. So this is also a kind of education, Kṛṣṇa education. So you have to find out a bona fide school, you have to find out a bona fide teacher, and then you learn. That's all. If, for Kṛṣṇa consciousness, you go to somebody who is engineer, then you cannot have Kṛṣṇa consciousness. But if you go to engineer, how to become engineer, you can become engineer. Unfortunately, we have got departments of knowledge in our educational system, but actually there is no department of knowledge where Kṛṣṇa consciousness is taught scientifically. That is the great necessity of the present day. But if you are sincere to learn, tad-vijñānārthaṁ sa gurum eva abhigacchet (MU 1.2.12), it is indicated by the direction of the Vedas, "Then you have to approach a bona fide person who can teach you Kṛṣṇa consciousness." Then you will learn it.