First off his story emphasizes the greed of man; the irony is that he himself is completely greedy.
Some ideas for this could be: Romeo and Paris have similar wealth and social status, different ages of the two of them, Romeo changes his love interests but Paris focuses solely on Juliet through the entire work, and along those lines, Romeo is emotionally unstable whereas Paris is relatively confident. Good luck!
Answer
c alexander the great worked only with green he trusted such as nearchus