This is opinionated and there really is no correct answer but—
A hero is someone who helps and benefits mankind, like a philanthropist in one sense. Heroes typically, in this culture, save others from villains and protect people from harm. Not only that, but they are someone people admire and look up to.
Hope this helps!
Well, depending on your personality, you will like some people, and you will dislike other, you will have a good communication with some of them, whereas with other people you won't be able to get along. If you are very shy and timid, you aren't likely to hang out with loud and extroverted people as much.
Samuel is the antecedent, and his is the pronoun that refers back to the antecedent.