moral of the story

I am read The one and only Ivan. Ivan is he main character and he makes a promise to his friend the elephant Stella That he will take care of the baby elephant that is brought here. He will have to take care of Ruby. The story take place in a circus. He has a friend named Julia she likes to draw near I an and she gives art supplies to Ivan so he can draw. His paintings are sold for 20 dollars. (25 dollars with frame.)

I think the moral of the story is that you should not give up because Ivan does not give up to save ruby and to get her in a zoo. Stella does not give up even though she was in so much pain because she has marks on her ankles from when they put cuffs on her ankles.