I need help wit an essey i have to do tommorrow (ASAP)

i have to write and essey at least 5 paragraphes or more answering the following

Why does Stevenson choose to portray Long John Silver in a positive light, considering he is a villain?

i dont need the essey i can right that myself all i need is the answer to that question cause ima use it as my thesis?
and it would help if u can quote the book with concrete details to answer the question to.

plz ppl i really need help
i read the book but i didnt get it fo nothing
and i have to have the the question answered by tonight