“There are leaders who go by the name of "rabbi" but whose learning has been picked up from the "superficialities" and "waste" of Torah. They are unable to control even themselves, let alone other people. But they still have pretensions to greatness and seek to lead and guide the whole world. You should be very careful not to accord them any recognition whatsoever, so as to not add in any way to their power or authority. They themselves can be forgiven for what they do: they are no more than victims of a strong lust for power. The people who give them credibility and power and who are prepared to accord them the title "rabbi" will have a heavy penalty to pay (LM I, 61:2).”