"People can change" strikes me as being a succinct statement of hope when dealing with humanity. It's easy to feel overwhelmed when there's a lot of nastiness... but people can change. It's easy to feel that you can't help a person, and maybe you can't while they're int he state they're in, but people can change.

But even if there's no real meaning to it, sometimes just saying something obvious helps you to remember that it's important and obvious.