[Pausing, Aqua looks back at him, something else besides badly bottled pique beneath the usual stillness of his gaze. He gives the question a serious moment of thought.]

...No. It's difficult... and inevitable.

[The first line disappears beneath the sponge, and Aqua starts working on the second.]

We're always learning. We're always changing. It's... impossible to change what's already happened or who we are because of it.

But we do everything we can in the future not to hurt like we did in the past.