Kay

“It matters which side we choose. Even if there will never be more light than darkness. Even if there can be no more joy in the galaxy than there is pain. For every action we undertake, for every word we speak, for every life we touch—it matters. I don’t turn toward the light because it means someday I’ll ‘win’ some sort of cosmic game. I turn toward it because it is the light.”
― Claudia Gray, Master & Apprentice

“Hope is like the sun. If you only believe in it when you see it, you'll never make it through the night”
― Leia Organa

“Rael Averross: "Let's say I believe that some day there's going to be perfect balance in the force, thanks to some kind of chosen one. Did you ever really think about what that would mean Qui-Gon? It would mean the darkness would be just as strong as the light. So it doesn't matter what we do because in the end, hey, it's a tie. It doesn't matter which side we choose."

Qui-Gon straightened and deactivated his blade. Rael took a step back, lowering his lightsaber but keeping it on. "It matters." Quin Gon said quietly. "It matters which side we choose. Even if there will never be more light than darkness. Even if there can be no more joy in the galaxy than there is pain. For every action we undertake, for every word we speak, for very life we touch, it matters. I don't turn toward the light because it means some day I'll win some sort of cosmic game. I turn toward it because it is the light.

.....

Averross: "You've made mistakes Qui-gon. You've touched darkness."
Qui-Gon: "Yes i have. No doubt I will again. This isn't a choice we make once and walk away from. It's the work of a lifetime.”
― Claudia Gray, Master and Apprentice

“Why does the third of the three brothers, who shares his food with the old woman in the wood, go on to become king of the country? Why does James Bond manage to disarm the nuclear bomb a few seconds before it goes off rather than, as it were, a few seconds afterwards? Because a universe where that did not happen would be a dark and hostile place. Let there be goblin hordes, let there be terrible environmental threats, let there be giant mutated slugs if you really must, but let there also be hope. It may be a grim, thin hope, an Arthurian sword at sunset, but let us know that we do not live in vain.”
― Terry Pratchett, A Slip of the Keyboard: Collected Non-Fiction