What did Johnny's note to Ponyboy say in the novel The Outsiders?

In the final chapter of the novel, Ponyboy picks up the copy of Gone With the Wind and begins to think about Johnny. When Ponyboy opens the novel, a piece of paper slips out and falls to the floor. Pony picks it up and finds out that it is a note that Johnny had written to him. Johnny begins the note by saying that he told the nurse to return the copy of Gone With the Wind to Ponyboy so he could finish reading it. Johnny goes on to mention that he doesn't mind dying and feels that saving those children's lives was worth it. He then tells Ponyboy that he's been thinking about the Robert Frost poem "Nothing Gold Can Stay," and says that the poem is commenting on youth. He encourages Ponyboy to remain innocent and to tell Dally that he should watch a sunset sometime. Johnny also tells Ponyboy not to be so upset about being a Greaser because he has lots of time to make himself into what he wants to be. He also comments that there is lots of good in the world and tells Ponyboy to share that information with Dally.