I've been in wars. I've fought in wars, dozens of them, from infantry to high commander. I've brought down emperors, and I've cared for the dying, and I've seen the beginnings and the ends time and time again. War is something I know. There are some on other worlds that last for millions of years, weapons that wipe out a whole planet in half a second. But humanity will see the end of this one, and the Earth will survive. There's hope for you.

[She doesn't even realize the deep, painful flaw in her argument, ironic to the very heart of her heart - Clara Oswald has not lived in wartime. She's always been able to put down the sword or the gun, to heal her wounds and wash her face and jet off to a new destination. She's brought down ruthless rulers, but she's never suffered under one; she's tended to the wounded, but she's never had to mourn them. Clara is a visitor of war, and a volunteer, but never a victim. Once, years ago, she would have chastised the Doctor for such a rant, sent him scrambling for his notecards. Now, it isn't even a thought.]