Seven things [are found] in a crude person and seven in a wise person: (1) A wise person does not speak before someone who is greater than himself in wisdom or in number; (2) he does not interrupt the words of his friend; (3) he does not hasten to answer; (4) he asks relevant questions and answers appropriately; (5) he discusses first things first and last things last; (6) about that which he has not heard he says, “I have not heard”; (7) and he concedes the truth. And the opposite [is found] in a crude person.