Kingdom Hearts2002

Ansem:
All worlds begin in darkness, and all so end. The heart is no different. Darkness sprouts within it, grows, consumes it. Such is its nature. In the end, every heart returns to the darkness whence it came. You see, darkness is the heart's true essence.

Sora:
That's not true! The heart may be weak, and sometimes it may even give in. But I've learned that deep down, there's a light that never goes out!

Ansem:
So, you have come this far and still you understand nothing. Every light must fade, every heart return to darkness!