Socrates and then Archesilaus used to make their pupils speak first; they spoke afterwards. 'Obest plerumque iss discere volunt authoritas eorum qui docent.' [For those who want to learn, the obstacle can often be the authority of those who teach]
Michel de MontaigneIf your doctor does not think it good for you to sleep, to drink wine, or to eat of a particular dish, do not worry; I will find you another who will not agree with him.
Michel de Montaigne