"Rav Yehuda says: One who wants to be pious should observe the matters of tractate Nezzikin. Rava said, the matters of Avot. And some say, the matters of Berakhot." Just as we are mindful about blessings, in knowing which blessing is to be recited for each and every commandment - since we must apply mindfulness in blessings, in particular - and just as we must devote our thought to precepts concerning damages and monies in ruling Halacha and in passing judgement, so - concerning the words of Avot – we must be mindful of how we comport ourselves and should circulate among people in a civil manner.