One, there will never be an adventure story finer than "Treasure Island". Two, Stevenson's thoughts on the art of writing are worth reading again and again.
"Man is imperfect; yet, in his literature, he must express himself and his own views and preferences; for to do anything else is to do a far more perilous thing than to risk being immoral: it is to be sure of being untrue". To ape a sentiment, even a good one, is to travesty a sentiment; that will not be helpful. To conceal a sentiment, if you are sure you hold it, is to take a liberty with truth ...
"Here, then, is work worth doing and worth trying to do well. And so, if I were minded to welcome any great accession to our trade, it should not be from any reason of a higher wage, but because it was a trade which was useful in a very great and in a very high degree"
The Art of Writing. (link to Gutenberg.org)