Discuss Johnny's reaction to the outcome of the rumble and his advice to Ponyboy.

This is perhaps the best and most famous part of the novel.  Immeadiately following the rumble Dally and Pony run to the hospital to see Johnny.   It will be the last time they see him alive.  Johnny tells them that fighting isn't worth it.  He understands now that it doesn't make sense to argue or fight.  He has come to a new realization in his short life.  He understands that no matter who "wins" or "loses' everybody loses. 

Finally, Johnny repeats a line from "Nothing Gold Can Stay" and tells Ponyboy to "stay gold".  He means that Ponyboy should stay true to himself.  For example, Pony should continue to see good in the world, to notice colors, to watch sunsets, etc.  He knows that these are the most important things in life. Johnny does not want Pony to get too "tough" or become cold and hard.