Question

when will the bell ring and end this weariness

Answer 1

The speaker compares his uninspired students to dogs that pull on the leash trying to free themselves from his instruction. They do not want to learn, and he does not want to teach. To this teacher, these students resemble dogs who have no desire to learn the lessons that this teacher is trying to teach them.

This teacher comes to the conclusion that he can no longer continue this charade of teaching and learning that is not happening. He desires to free himself from this the same cage that he deems these students so unwillingly occupy.