Part 1: The Climax of the story, I think tha
Sergei although may seem embittered is a kind man who has used his wishes for other people around him. He used his first wish to cure his sister's lung cancer and his second wish to cure his son who has development issues. He is a kind, self-less man who wishes to put the needs of others before himself.
He sells romeo to the fatal posion
It means that a part of the quote was removed because it wasn’t relevant/important/necessary to add.
