I don't know where else to put this other than here, so... In the legend of Pandora's box, Pandora's curiosity got the better of her and she opened said aforementioned box, and in doing so let out all of the evils in the world. She managed to get the lid shut again just in time to trap one last thing; hope. So... the things in the box to start weren't a part of the world right? So, what, we have no hope because she closed the box? Or it's the other way around and we have hope but no evil?
The version that I heard most was that hope came out with all of the evils. Before evil, hope wasn't necessary. After she releases the evil, she also releases hope, so humans don't all kill themselves in despair. The world is bad, ys, but we can always hope for something better.
The version I read goes: she didn't trap a creature called Hope in the box, or release a creature called Hope along with all the other evils. She trapped a creature that would tell everyone exactly what evils would befall them and what horrors lay in their future. By trapping this creature, she gave the world the gift of hope (figuratively more than literally).
I always thought that, despite the new evil in the world, she refused to "give up Hope".