The Question and Answer section for On the Road is a great resource to ask questions, find answers, and discuss the novel.
To everyone except for Sal, Dean is a failure. On the Road is Sal's story, though, and his attempt to make everyone else understand in what way Dean is a hero. In fact, to Sal, Dean is more than a hero: Sal sees something saintlike about...
The Sabine River can be found on Page 158. Note, my copy maybe different than your own.
Sal views alcohol as an escape.