Reflection for the End of the Academic Year

    והיינו דאמר רבי חנינא: הרבה למדתי מרבותי ומחבירי יותר מרבותי, ומתלמידי יותר מכולן.

    And Rabbi Hanina said: Much have I learned from my teachers, and I have learned more from my colleagues than from my teachers, and from my students I have learned the most.

Babylonian Talmud, Taanit 7a:12. My Translation.