Things change a little bit at the time, but they never stop changing.

When they change enough, what was yesterday and what may be tomorrow can be completely unrecognizable.

Celestia summons Twilight to teach her, first hoof, how that applies to ponies.

Written for the 16/08/2014 writeoff competition "Famous Last Words"

-Author note: If and when you find technical errors, please tell me! I've edited this as closely as I could, but I might have missed things or just not be aware of them.
I'm still learning how to rite gud, and I very much want to learn and improve. Criticism of any kind (not just constructive; I believe all criticism is valuable) is extremely welcome.