Diana Prince: I used to want to save the world. To end war and bring peace to mankind. But then I glimpsed the darkness that lives within their light and learned that inside every one of them, there will always be both. A choice each must make for themselves. Something no hero will ever defeat. And now I know that only love can truly save the world. So, I stay, I fight, and I give, for the world I know can be. This is my mission now. Forever.

From the movie Wonder Woman (2017)