Answer:
Besides we cannot go after the other women whom we should marry in due course, but for the way in which she treats us." Then Telemachus said, "Eurymachus, and you other suitors, I shall say no more, and entreat you no further, for the gods and the people of Ithaca now know my story.
To Introduce the topic with some indication of its inherent interest or importance, and a clear definition of the boundaries of the subject area.
You have to compare to teacher to something else like: "My teacher is as sneaky as a fox" ; Something like that.
Im assuming youre talking about a famous Frankenstein poem. He does so because he is desperate for a friend. The old man is blind so he feels that the monster is not much dIfferent from any human.