Jayatīrtha: (indistinct) what you were speaking about yesterday, that if someone claims to be a teacher but he doesn't actually have real knowledge, then he's simply cheating.
Prabhupāda: Yes.
Rāmeśvara: There's nothing practical that they say.
Prabhupāda: Eh?
Rāmeśvara: They say nothing practical.
Prabhupāda: That means they do not follow any practical. That is their rascaldom. Nothing practical means they do not know what is the practical realization of God. That is their ignorance. And still they are claiming to be teachers. That is cheating. Just like these so-called scientists, they are theorizing, but they cannot practically prove. Therefore, their knowledge is imperfect. Bahūnāṁ janmanām ante jñānavān māṁ prapadyate (BG 7.19). Jñānavān, the wise, after many, many births' cultivation of knowledge, when he surrenders, that is practical. Simply knowledge is useless, theoretical. When he practically surrenders, that is end of knowledge. That is perfection.