Clara and The Doctor in “In the Forest of the Night”

This really is gonna happen, isn't it?

Stars implode, planets grow cold, catastrophe is the metabolism of the universe. I can fight monsters, I can't fight physics.

Why would trees want to kill us? We love trees.

You've been chopping them down for furniture for centuries. If that's love, no wonder they're calling down fire from the heavens.

But we saw the future. Lots of futures. Earth's futures.

They're about to be erased.

If you can't save them all, save what you can. TARDIS. It's a lifeboat, isn't it? Not everybody has to die.