One evening in Srila Prabhupad's room he said: "when preaching just tell the truth..that is preaching. Not everyone wants to hear the truth. Sometime animosity will arise but the truth will be appreciated by those persons sincerely wanting it. The truth must be spoken ! People are looking for something. When you speak of restrictions (no meat eating, no intoxication, no gambling, no illicit sex) some become angry. They don’t want to give up. They want to have cake and eat it to. The risk is there when preaching that some will not care for us.
Follow the rules and take Krishna, that is our message! Naturally everyone is pure so this restriction is not such a difficult thing."