Previous pinner wrote----Always be thankful for what you already have—which is so very much! “Those who live in thanksgiving daily. are among the world’s happiest people. The power of gratitude is immense.” –Joseph B.
Explanations won't make things better. We feel that we're not even worth a explanation when someone does us wrong. The truth is that the explanation won't change things or make them any better, they will only hurt us more.
Hope is something everyone has, but most people let hope go. They hope things will improve, but they let that feeling fade away into the darkness of their thoughts. Valjean keep his hope alive and in return, it kept him alive.