Tznius: The Condition for Growing in Torah
The importance of silently listening to one's Rebbe teach. Drush on the meaning of the imagery of people having one mouth in contrast to two ears. Wisdom is required to properly ask for guidance. A warning about the value of answers and advice from gedolim when very terse "life advice" questions are posed to them.
The importance of humility in choosing the right Rebbe.
Having proper attitudes in the life stage of (primarily) acquiring Torah and in the later stage of preserving one's Torah.
Citations: In addition to the commentaries on Mishlei, this shiur references Peirush HaGral 'Safrad 'Tzniusa 1stperek, Talmud Yerushalmi Brachos 5:1, Shulchan Aruch Yoreh De'ah 246:23, Rambam Hilchos Talmud Torah 3:6-9, 3:12.