I don't know this book, but I can infer that Ralph may be in a tricky/dangerous social situation, and may have to be aware of the people around him and their intentions.
That would be a work sited page or its considered plagiarism.
Adding the transition "however" at the beginning to connect the ideas better. Because the 4th sentence was an argument and however is a transition in oppostition. The point you're trying to make in the paragraph is to the opposition of the 4th sentence statement.
