Seven traits characterize an uncultivated person and seven a learned one.
A learned person does not begin speaking before one who is greater than he in wisdom or in years;
he does not interrupt the words of his fellow;
he does not answer impetuously;
he questions with relevance to the subject and he replies accurately;
he discusses first things first and last things last;
about something he has not heard he says, ‘I have not heard’;
and he acknowledges the truth.
And the reverse of these characterize an uncultivated person.
Pirke Avot 5:9.