What does Franz observe about M. Hamel’s demeanor as the lesson ends?

As the lesson ends, Franz observes that M. Hamel’s demeanor is marked by a profound sense of sadness and resignation. The normally stern teacher appears visibly emotional, with tears glistening in his eyes as he bids farewell to his students. This vulnerability contrasts with his usual authoritative presence, highlighting the gravity of the moment and the deep connection he feels to his role as an educator. Franz is struck by this display of emotion, realizing how much M. Hamel values both his students and the French language, which adds to the weight of their final lesson together.