An English proverb: “Caesar’s wife must be above suspicion.” So anyone who is on the position of teacher, he must be above suspicion. That is our first acceptance of teacher. We don’t accept any teacher who is under suspicion.

How he can be teacher if he’s under suspicion? Now they may question that if you are above suspicion. “No, I am not above suspicion, but I am carrying the message which is above suspicion. Therefore I am above suspicion.” The peon delivering you four hundred dollars, he is not rich man, but he is actually delivering four hundred dollars. That is our position. Therefore we say, evam parampara-praptam [Bg 4.2]. I may be rascal, it doesn’t matter, but because I am carrying the message which is not rascal, therefore I am fit. This is our… We don’t say anything rascaldom because we don’t say anything which is not spoken by Krsna or by authorities like Vyasadeva. That is our position. Don’t teach anyone else except what Krsna teaches. Krsna says, “Surrender unto Me.” We say, “Surrender unto Krsna.”

Srila Prabhupada, Conversation, regarding philosopher Hegel